i have a 88 Gt and i wanna convert it to Mass Air, i have a couple questions. firtst, will any computer from 89-93 hook up to my wiring harness thats in there now? also i've been scaning ebay for computers and theres a A9L and A9P, whats the diference?, also what parts am i gonna need to do this, as far as i know i just need the computer, harness and sensor, is there anything else that i'm missing? if anyone could answer these questions that would really help me out.