engine conversion harness for 5.3 chevy swap
 

Im going to swap in a 5.3 turbo chevy swap and have been lost as to where to search for a conversion harness to make it functional in my 94 fd.thanks for the help in advance and I apologize if im pissing off the rotary purists

Don't any of the V8 harness/ECU vendors have standalone harnesses?

You'll need to modify a few things on the FD depending on how you swap. For example, the FD speedometer sensor is electronic and mounted on the FD transmission. It requires some rewiring if you remove the FD engine harness.