Can a 90-92 7730 ECM run a early LT1? Specifically, can it understand the ignition system without any extra programming? I would swap this engine into my 3rd gen Bird which has TPI, this way I could keep the orig harness and not have to learn how to program the later ECM's... Don't the 92-94 LT1's have something different than the 95-up Optispark? TIA Tom