I really thought that they were different. We did a 350 swap to an 87 that had a 2.8 originally and Dad had to mod the harness. Same with another swap that was a 2.8 truck originally. The swaps in 4.3 trucks I never changed anything on the harness.
Dont think that would work either. I can look into it but I dont know HOW different it is because of any turbo stuff involved. ThanksI have a stock 91 Syclone 92-93 Typhoon 4.3 engine wiring harness if youd be interested in that?