I checked it out, the most I could get on the '08 was a 3 year/36,000 warrantee, with a 5 yr, 60,000 powertrain (you are right, it was better in .07). I managed to talk them down to 850.00 for the 7 yr/100,000 extended.
Any mods I plan to do would be bolt-ons: I had in mind an AMS box-type intake, UITP, and maybe a cat-back exhaust at some point. I have a guy in Huntington Beach, CA at EDO Performance that utilizes a WORKS custom tune which seems like it would do the trick. I would like to keep it below 330-335 whp to help longevity. Thanks for your comments and suggestions.