If possible, try and go with a twin disk clutch. My bf has a Spec Stage 3+ in his Solstice, and while it works fine now that it is installed, we had a hell of a time with the installation. Spec was not very helpful either. Recently they sent the wrong pressure plate to a friend of mine and refuse to admit their mistake. Just haven't had very good experience with them. With that being said, no matter what clutch you go with, the install is a pain. The whole rear end of the car needs to be dropped to get the tranny back on. I think a shop could do it for $700-$800 if you shopped around, but that is likely if they haven't relized the PITA they are getting themselves into, lol. If you live near enough to a kappa shop such as DDM or Werks I would very highly recommend letting them do it as they have the process down pat and can catch if there is anything not right with the clutch or flywheel before install. Best of luck with your swap and be sure to let us know how it goes!