MustangWorks.com : Ford Forums - i have a disc brake question for you all

hello everyone, i am putting a disc brake 9 inch rear on my mustang that already has front disc brakes and i have a couple of questions to see if anyone can help me out. i would like to know what vehicles that i can get a disc/disc master cylinder out of and what i can get a disc/disc proportioning valve from that are not too expensive. i spent alot last year from master power brakes on a disc/drum master cylinder ($120) and disc/drum proportioning valve ($100). i would like to use something that is not so pricy as the disc/disc items from them are a little more expensive than what i have already paid. i guess i would sell what i have on the car to offset the price, the mc and valve have only been on the car about 14 months and has about 2000 miles on it.

please let me know if you can help me out with some application information.

thanks, shawn