i'm gettin ready to swap out my tired d16a6 from my 91 si for somethin else. i'd like to do b series but thats kinda out of my budget. i've decided to go with either a d16z6 or dohc zc. i know they both put out about the same hp and tq numbers and can be bought for around the same price. the z6 would prolly be newer and have less miles but would be slightly more difficult to swap b/c i'd wanna convert to obd1 and run a p28 ecu. anyways let me know if u got any input that might help me out here.