Quote Originally Posted by BillBoost37 View Post
IIRC the 96 is a 256mb file pcm and the 97 is a 512. If you really wanted to do yourself justice...upgrade to a 98+. I think it's about 13 pins in different places on the gp harness.

It's a solid cluster on a bonneville lol
I actually looked at doing a 98+ PCM swap. I found a post on some other forum where someone said that ALL but 4 wires had to be re-pinned in the PCM connector. After that, the 1997 swap seemed so much more attractive, despite being a less powerful computer.

I'll see if I can track down a 1998 pin schematic to compare with my car and get a more accurate idea of how hard it would be.