Hi all! I have a question I desperately need help with. The 4l80e in my 1991 V2500 Suburban just blew, and normally I would just get the trans rebuilt and call it a day, but I've been gathering parts for an 8.1 swap. I have read that you can get a PROM for my ECU (7060) that will allow me to run the later solenoid but it's only mentioned with no further information. Is such a PROM available?

If not I suppose my options are getting my unit rebuilt and then changing out the vavlebody and whatever else down the road or swap in a later unit and swap the valve body, etc. now, or swapping in a later unit now and changing my ecu to a 94-95 and repinning my harness?

Any help or insight would be appreciated. It's my daily so I can't afford for it to be down long. Thanks!