hey i was wondering which would be my best bang for the buck the y8 head or the z6 head iam only puttin it on a d15b1 cuz rigt now it is a roach lol and i want a little more juice will it be worth it will i have nice vtec and power gainss or just a little explain 2 me plzzz thanks alot hitt me up on aim 2 xxcivicb16a thanks..

 

Either one would be a good choice but the Y8 would be slightly better IMO. You'll get slightly higher compression since it has a squared combustion chamber and not to mention the dizzy will bolt up without hacking a leg unlike the Z6. Whatever route you choose make sure to fit an MPFI conversion into your budget if possible. If you are forced to choose between the MPFI or head swap, go with the MPFI first. DPFI mini-me

 

what type of power gains will i be looking attt like little bit faster or a lot faster with the vtec hooked up???