one pcm I`m not seeing is 12581565 would this be a suitable unit to retrofit into a 1989 K1500 with TPI, engine is staying Gen1 but I am having EFIconnections 24x reluctor installed. Wondering about gauges, 40T transfercase reluctor on the 700r4. A Silverado is in the wreckers now and I can grab the complete harness, coils and ecu. Perhaps there is a better choice- 411.... but this is here and now.

