The b16a1, b18a, and zc are all very common swaps. The b16a1 is actually 10.2:1 but that doesn't really matter tongue.gif I've got a b16a in my hatch, done a b18a in a crx, and we are doing a b16a in another 4th gen hatch right now. Kinda hard for me to do much of the work right now since I dislocated my knee. Just figure out what you want to do with the car and then decide what motor is best for you by doing research and talking to others.