With the crossovers mounted in the cavity where the sub enclosure goes are you not going to have to relocate them when you do add the sub--(REQUIRED in my mind).
Attached is a photo of my install and you can see where the installer put the larger MB Quart crossovers and there is no problem with the panels coming back together.
I did not notice too much difference with roof down after the install of the Dynamat Extreme covering all the interior, including the floor, firewall, trans tunnel and like you the doors and back wall. To me it made a big difference with the roof up--much more liveable. Now we only have a little wind noise due the soft top but not all the road noise from the floor, doors and drivetrain noise through the tunnel.

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GXP--Cool / 5-Spd.
TSW Nogaro 19" Rims, 245/40ZR-19 Dunlop SP Sport Maxx XL Tires, M/F 3" Exhaust, Norm's Cowl Panels & Side Skirts, Gentex Rear View Mirror, Stubby Antenna, Little Chromies, Momo Shift Knob, Hand Brake, & Floor Plates, Full Interior Reupholstery.
Stereo Upgrade: Kenwood DNX8120 w/Garmin Nav, iPod, DVD, XM, Bluetooth, Rear Camera, Alpine PDX-4.150 Amp, MB Quart QSD 216 6.5" Speakers, 8" Boston Sub, Full Dynamat Interior.
Last edited by russsims : 02-15-2008 at 10:30 AM.