i got my d16z6 swap done finally. it runs very well and it's a HUGE improvement from the 70 hp CX motor. first gear: 42mph@6500rpm. 2nd gear:78mph@6500rpm. i set my red line lower than the 7200 redline on the EX head, because my motor started losing power around 6700 or6800. i doubt, well i KNOW i'm not getting the horsepower i could be getting, but i had to use the CX header. reason is because the catalytic converter is right below the small header. so, i need to get a performance header and downpipe so i can put the si cat on. and that means re-doing my exhaust. hopefully with something quality rather than "exhaust pros" cat back exhaust. what exhaust is recommended that will give me the best results?? what do you guys think of my plans to build my single cam motor (low compression pistons, new valve train, etc.) and slapping a respectable turbo kit on? i know you people would rather say to put a b series motor in instead of keeping the single cam, but i think the satisfaction of having maybe 200 hp on my single cam would be better than the b series. i don't know, but i like that idea better.