Engine swap is not an option and I don't think it is worth it for only 308 hp. If money is not an issue which do you think is better, turbo or SC? I thought the turbo kits were hard for daily driving. In either case (SC or TC) will i need to upgrade the clutch? What other parts might I need to upgrade? I know on AA site they talk about upgrading the rear diff, suspension, etc. is that really needed? The car has suspension already, just worried about breaking engine and tranny parts.