Personally, I'm not a fan of the Hahn stuff. I think the manifold design is junk and you can fabricate them for a very little money. They don't flow that well and I would much prefer something a little better for the price.

Secondly, I don't like how he mounted the intercooler right in front of/on the radiator. It blocks the flow of air diverted up to the radiator by the air dam that hangs below the car. I know they did this because the rounded nose on a N/A Solstice limits how far foreward and how low you can mount something. Still, DDM Works Stage II intercooler mounts in a better fashion and works with the solstice nose.

Thirdly, I think BEGI fuel pressure regulators are crap. For the money I would like something a little more modern.

Again, this is all just my opinion, and Hahn has sold a lot of kits while I'm still working to complete my car. Carlintexas was one of the first people to have a Hahn kit and after all the problems he had he finally took his car to DDM Works and had them re-do everything. It seems that Hahn's customer service is getting better (judging by how quickly he addresses complaints on the forum) but usually things have escalated to the poiont the owner is fed up enough to make a post. After talking to people in the DSM crowed, they don't think much of the Hahn stuff, but they also have a lot more vendors making things for their platforms.

This is not intended as a flame, you asked for opinions and you got mine.