I believe I narrowed my issued down to the new 1999 PCM. It's at the supplier being retested and hopefully repaired IF they can duplicate my issue, which again is once at temp for awhile, it wants to stumble and hard to start. Leave it cool and it's great. With the 97 PCM in it, it runs great and starts back up even when hot, just no gauges. Hoping they find bad connections in the new one it once hot and this all all for not, but if not.... Question, can I "piggyback" the two PCM's as a fix being it runs awesome with the 97 PCM and gauges work with the "new" 99 PCM? Plug C3 (the one with the Bus +/- and SCI transmit/receive connections) into the 99 PCM and the C1/C2 plugs which run the engine into the 97 PCM ??? Would this work??? At least as a temp fix anyways.