i got a buddy who has a 2000 civic hb and he plan on doing a build for turbo, but he does not know which engine to buy. he has a y7 in his car currently and a y8 head and mani(not installed) now and just want another block to build outside the car. So which will be the best stick with a y7 block, or get a y8. also if he got a z6 there be any issues with using it. obd2 to obd1 will be necessary of course. But mounting and wiring should not be an issue right.