Also required for the dual-line master conversion is brake lines, a distribution block, and an adjustable proportioning valve to eliminate rear brake lockup.

Proportioning valves come in all shapes and sizes and vary considerably depending on the car you are working on in a brake disc conversion, and we have expert tips to help you decide. - Super ...

We wrap up this disc brake and five-lug conversion with power brakes and an easy-to-access proportioning valve.

Mustangs & Fast Fords OC does a six-cylinder disc brake swap and five-Lug conversion on a classic Mustang. Find out how to do this swap!