I have heard from a source that the 92 A9L computer was the best computer to hit the market as far as tuning goes. After 92 the emissions programming started to impede aftermarket modifications. I do know, from experience, that the change of cam lift on the 94-95 will severely hurt idle. So, my questions are, is this true? If so do the wire harnesses match letting me make the swap literally a plug-and-play?