i've got a friend with an '86 truck, originally came with a weak ass 305. he has since put a 350 in it, and is having problems with his carb on angles. when i was looking at doing a TBI swap into an '86, i was told that the '87 engine harness and ECM harness was a direct plug in on the '86 cab with ESC, even had the proper hole in the firewall for the ECM harness to run through. being a factory cruise truck, on both accounts, the sensor that is needed behind the speedo should be there, correct? has anybody ever sucessfully installed a TBI setup like this in an '86? any problems you ran into?