T5 Cable Clutch Conversion Kit

Purchase from Modern Driveline and installed in the car to find out that it wont work with headers that are on my car. Removed it from the car. I did have the support plate powder coated black to match the firewall otherwise it is the same as new. Comes with all the pieces and instructions.
$200 plus shipping anywhere in the US.

I have a 65 Mustang but this part will work in a 64.5-66 Mustang
My Mustang has Hooker headers on it. Modern Driveline website says that any shortie header will work and it also names Hedman headers.
Check out their website for more info on what will work.
Dan