Front disc conversion on '65 Barracuda FS

1964cuda said
Hi Bob,
Yes I believe the one I got is for like a newer style aftermarket, may not be period Mopar correct, that is a combination valve with proportion and front hold off or metering all in one.this is what was sold to me with the master cylinder and all the lines bent to fit. Along with rebuilt calipers, LCA and new rotors.

View attachment 1716366598

I looked it up on Jegs website. Yes, its not correct for your Barracuda, its a GM valve. That's why you had to add the separate adjustable valve. As Rusty indicates in post #10, the fixed proportional valves are specific to the car design.