I have been thinking of building my F22a1 with my H22a4 head but I was told it would be a bitch cause of the OBD1 lower and OBD2 upper. I stopped building the H22 because I didn't fell like sleeving the block. I've read about 20 articles on Honda-tech but I was trying to find someone local who can shed some light on the build. I want to run 12:1 ratio all motor chipped Ecu.