THIS IS A PART NEW MADE IN USA BY ALLOY METALS! PACKAGE SAYS FITS 1985 FORD MUSTANG CARBUIRETED 5 SPEED CARS. I KNOW IT FITS 5.0S BUT NOT SURE IF 4CYLINDERS OR 3.8S, NOT SURE WHY 5 SPEED CARS WOULD BE DIFFERENT PLEASE LOOK AT YOUR EXISTING WIRES OR SET UP TO SEE IF YOU CAN USE THIS! THANKS FOR LOOKING