Originally Posted by DRfrank
i am going to overbore a b18c to 2.0 liters and put it in a crx, now the thing i want to know is which head is better for PnP and or upgrades, the c1 or c5, i heard that the c1 is basically just a b16 head so i was thinking that the b18c5 head would be a smarter choice, yet more expensive
Are you going FI? If so, all this garbage about ITB is useless to you. The head choice is dependant on whether or not you are going FI. ITR has lower compression and the GSR has higher compression. It is about .2 points difference on a with a stock GSR block and pistons, so it is pretty negligible if you are throwing dished pistons in there anyway.