Quote Originally Posted by Sam
That means the exhaust housing is bigger, not the wheel. It'll be a little laggier but make more power up high. Sounds way to big for a 4 cylinder, it'll spool real late. I would reccomend the .64. It'll spool quick and make plenty of power. We use the .80 on the GS400's and Supra's that make over 600 hp.
We run pt67's ( rather large t4) on our hatch and em1, both stock stroke, 84mm B-16s spool late but are good enough for well over 650 whp. Walbro 255 hps and aeromotive inline pumps with MSD 1000cc injectors, thats not very exotic, but it works.