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Two piece prototype Collins and Aikman Dura hardtop

13869 Views 332 Replies 25 Participants Last post by  suitup
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Starting a new thread here regarding this unique top i just acquired thanks to Choptop's FB link and some gentle prodding from 4501Safari (Richard).

Let start with the information from the seller.
-Seller's company specializes in liquidating industrial warehouse when companies go bankrupt.
-Around '08 or '09 they were contracted to liquidate 17 of the Collins and Aikman Factories. Two of those factories were known as Dura Convertible Top.
-Dura apparently had a "North" and a "South" plant.
-When they originally acquired this prototype two piece hard top it was on a functional mock up with electrical actuators that allowed it to be demonstrated as a functional hard top.

Guessing here:
I suppose Collins and Aikman being the softop manufacturer for GM for the convertible Kappa's make this not quite a genuine GM part, but I would assume a prototype they had put together to pitch to GM as an aftermarket option, or possibly an official GM option had it not all gone belly up with the loss of Pontiac and Saturn.
One of the tings that makes this hard top unique is that it is the only one i have seen (outside of Nankoo's one off artistry ones) that allow you to open the trunk with the top still on.

I just closed the deal with the seller and do not have it yet however i wanted to post all the photos i have on it as of this moment.

Feel free to ruminate and speculate below.


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I believe there was damage there in the original and Norm had to repair it. Now that i look at this photo again the main top did not extend out to the side leaving room for the edge of the targa bar.
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Just pulled the targa bar to make some adjustments.
This photo illustrates the issue. The way Norm repaired the original it sits “proud” of the deck lid when it is shut with no notch on the side for the targa bar to sit. Instead the targa bar is on top of the rear lip of the hard top.
Since the targa bar crosses between the deck lid and on over the back of the top, the back edge of the top would have to be flush with the deck lid for this to work.
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Now i haven’t tightened the top back down yet but no matter how much i tightened it would still be on top of the weatherstripping and be too high. Even without the weatherstripping it would still be too tall the thickness of the rear edge of the top. Here is how it fastens:

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Here it is tightened down:
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Underside of the targa bar:
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Here is the problem. When Norm repaired the rear corners of the top he added this section:
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and that is where the targa bar needs to come down.

i messed around with shims and it is obvious that raising the targa bar to sit on top of that lip makes it too tall for the rest of the top.
Plus the gap on the tail of the targa bar to the trunk is crazy.
Logic dictates it has to be that lip.


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If i slide it over the edge on one side to see how it would align, it looks like it should:
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So i reninstalled the soft top actuators and dropped in the kappa kaps so i can drive it for now. Gonna have to find a good body guy to take this on.
(For now that means “I” am “Chop Top”)
:)

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I believe your on the right path in needing to remove part of the top footprint so the Targa sits down.
Looking at how the top fastens to the trunk wall do you need to fabricate a new water drain system that is normally part of the convertable top ?
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Trunk gasket fits tight against the back of the top. Highly doubt any water is getting in there.
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Your car is already looking great and one of a kind even without the targa bar! Of course you already have the kappa caps, silly me to suggest buying them 😁
After you exchange ideas with Norm, it'll be time to find a good body shop. I wager that being around LA there will be plenty good custom body shops, it's the cost that worries me the most...
Your car is already looking great and one of a kind even without the targa bar! Of course you already have the kappa caps, silly me to suggest buying them 😁
After you exchange ideas with Norm, it'll be time to find a good body shop. I wager that being around LA there will be plenty good custom body shops, it's the cost that worries me the most...
Yeah around here if the body shop is any good they probably already have a reality show :(
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So , we could see a Solstice GXP on the telle in the future. ;)
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HH, this pic is throwing me off, would you take a pic several feet away for a better orientation/perspective. TIA
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Do you know if GM supplied Dura with any blueprints or electronic files to engineer this? Say from the SCCA carbon fiber hardtop? Also does it have the subtly double bubble in the roof.

Here's a rear-ish view of my Smoothline hardtop sail panels/buttresses. Note how the bottom of the sail panel area angles from the back of the door to the decklid chrome grommets. I'm trying to figure out how's your halo differers so much from the GM carbon fiber hardtop, and the Smoothline.
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It seems Dura was the supplier for the fabric tops so they would surely have all manner of blueprints and specs.
I have already removed the targa bar but if you look closely at that photo you can see the antennae.
Here is the zoomed out shot sans targa bar
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HH, this pic is throwing me off, would you take a pic several feet away for a better orientation/perspective. TIA
View attachment 130003
Do you know if GM supplied Dura with any blueprints or electronic files to engineer this? Say from the SCCA carbon fiber hardtop? Also does it have the subtly double bubble in the roof.

Here's a rear-ish view of my Smoothline hardtop sail panels/buttresses. Note how the bottom of the sail panel area angles from the back of the door to the decklid chrome grommets. I'm trying to figure out how's your halo differers so much from the GM carbon fiber hardtop, and the Smoothline.
View attachment 130004
Also Post #220 has some shots from different angles of the top. It does not have the double bubble like the smoothline.
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Hey Gadget, I was thinking about this just now and realized Norm might have radiused that corner to prevent cracks on the GRP, it is a material that's kind of prone to cracking... I believe you'd be better off radiusing the matching part of the targa bar, rather than squaring off the top. Food for thought. Have a great Monday, cheers.
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now we need a full frame ie not zoomed in pic of the Gadge-mobile with just the top installed, I bet even like that it looks wonderful
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now we need a full frame ie not zoomed in pic of the Gadge-mobile with just the top installed, I bet even like that it looks wonderful
Post #220 has the pics.
Here is one of them:
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