Carbed 350 in a 87\' TBI I have an 87 with a locked up 350tbi. I have a strong running 350 w/ a holley carb. What changes have to be made to the wiring harness. Can I use the engine harness from the 78' 350. What about the cab harness. Should I swap that out too. The 350 TBI harness goes throught the firewall to the computer, where the carbed harnesses computer in picked up in the cab.