88 c-3500 radio harness???

Would anyone happen to have a part # for the stereo harness adapter for a 1988 c-3500? I cant find one that fits my truck. Any help would be great. Thanks

GMT400 body style (88-98) or squarebody C/K style (73-87) ? Since both were available, I gotta ask.

The AMI harness kit for 88-up truck is GWH-344, also fits many other apps, but in the trucks is for the 88-98 body style. I don't think there is one for squarebody but someone else might know.

AMI also makes the best dash kit for 88-98 - GMK-333, and the cool radio delete storage pocket kit GMP-333. Antenna adapter is GM-6.

Richard