Decided to use the 03 pcm with the OK tune on it and copy the gt tranny tune to it. Seems to have worked, tranny is shifting fine-- a little bit blah on the shifts so I might start looking for better tune to firm up the gt tranny. Motor definitely needs some fine tuning, no.1 has a misfire going on, still throwing a p0134 and dam slp's are leaking at the collector/crossover. But at least it starts and drives!