swaping a tpi 305 from my totaled 86 iroc into my 89 firebird formula 305 tbi. i dont want to use the harness from my iroc cause its to ripped up from the crash (i REALLY got wacked) im getting a painless extra length harness to do the job. what i need to know is what do i need if anything from behind the dash, besides the computer. do i need any of the ignition wires or the fuse board. also the new harness dose not run emissions systems. would it be possible to incorperate the necessary wires from my old harness in to the new one to run the emissions.

 

first off, don't get the Painless. Its a true PITA. You have to splice the whole thing, just about.