I SWAP A 350 TPI OUT OF A 88 IROC Z AND PUT IT INTO MY TRUCK. BUT I DIDNT KNOW ABOUT VATS AND I DONT HAVE THE IGNITION SWITCH,THE KEY OR THE VIN# SO I COULD KNOW FIND OUT HOW MANY OHMS THE IGNITION SYSTEM IS RUNNING TO TURN ON THE ENGINE. SO MY QUESTION IS DO I HAVE TO REPLACE THE HOLE HARNESS,ECM, AND ALL THE OTHER RELAYS OF ANOTHER TPI CAMARO TO KNOW HOW MANY OHMS THAT VATS IS RUNNING TO ADD THE RESISTOR ? OR CAN I JUST CHANGE THE ECM,AND THE OTHER RELAYS AND KEEP THE HARNESS? I RELLY DONT WANT TO GO CARB. PLEASE HELP!!!