2011 WRX , 30,000 miles. 275hp 303lbs tq. Clutch I assume is about to go. RPM's spike and car doesn't respond right around boost. It eventually catches but with what feels like much less torque. When I replace my clutch how heavy do I go? I would like to eventually like to get bigger turbo, injectors, fuel pump, and inter cooler. Looking to eventually be at 330-350hp. Any advice would be appreciated,thanks.