I'm trying to figure out what booster and master cylinder people on here use with their 4-wheel disc setups (especially those using a GM Metric rear caliper).

Anyone? I should clarify I'm looking for people with older RWD mopars who have installed 4 wheel disc setups on their cars.

I am running the SSBC four wheel disc set up on my roadrunner. I am not using their master or booster though.

I am using a 15/16" bore master...I think it is for a 73 A body with disc brakes.

And a dual diaphram booster for a 70 roadrunner. The whole set up works great!!

I originally tried using SSBC master and booster and could not get the brakes to work well.

I am using a hydroboost booster off a 99 astro van with a 1.25" bore master cylinder of a early 90's C2500 or C2500 truck. I have the cadillac calipers on the rear and mopar single piston calipers on the front. It works great. If you want more peddle travel you can try a master cylinder with a 1 1/8" bore.

using F/M calipers & 11.75 rotors in the front and wilwood discs in the rear, with a stock M body master cylinder and booster, works good.

Get the wilwood tandem master cylinder (7/8" bore I believe) and a proportioning valve. That is what I have on order to work with my 4 wheel disc brakes.

I have manual 4 wheel disc with a 7/8" Wilwood MC