Working on my coupe-R build and somehow I ended up with some excess budget - so Gordon is working on if 5.0 SCA or 5.2 XS is best way to go - question now is on internals of 5.2XS - can they withstand boost up to say 15-20 PSI and generate HUGE HP and torque numbers and still be rock solid. He is working on this - but any help here is appreciated....

Any experience here to leverage? Plenty of folks out there are doing E85 (race quality) and 12:1 with turbos.....

Either motor will get cams/phasers rolled back from gen 2 to gen 1 so AEM infinity will be the ECU......The 5.2 XS actually has same cams (lift/duration) available in the gen 1 form....(guess they knew no 3rd party tuners exist for gen 2 yet....)