You can swap a valve body from 1991 to 1996, but the '97 -04 & '04 -up cases and valve bodies are different and will not interchange. The force motor (EPC solenoid) is the same from 1993 - 2004 (black small diameter) the early '91 - '92 is the large silver style, but you can and should update to the later black style EPC solenoid. The '97 - up style pan will not work on the the early version due to the lube tube, but you can possibly locate a '93 - 96 OE pan with a drain plug. Worse case you can upgrade to an aftermarket cast aluminum or sheet metal aluminum pan with drain plug.

I guess I would ask the question, what are you looking to accomplish by changing the valve body? You can just install Sonnax updates in your valve body, install a new internal wiring harness with the updated EPC solenoid and even a shift kit if desired.

I hope this information helped. Let me know if you have other questions or need any of the parts to make this happen.



Thanks,
Mark