I'd buy an H22 and use a chipped P28. You'll have to get a P28 or another chipped ECU when you turbo anyway. Well, you should. That way, you'll have a better motor to begin with that's made to spin faster. Then, you can get setup for turbo a little later. A turbo F22 will be a little faster than an H22 I think. But a turbo H22 will be very quick. With a chipped ECU, you can run optimal fuel maps for your engine and make reliable power without detonation.