Many of the aftermarket suppliers use a Corvette master cylinder for disc/drum conversions which has the same size reservoir for F&R. I have been using this system successfully for about 7 years and installed several of them on other conversions.
A Corvette MC can also used with a disc/disc application.
It is important to purchase these components from a competent supplier and let them know what type of system you plan to use. Many parts will bolt together but may not be compatable with your system and achieve the desired result.
Fred

Last edited by rfs56trk; 12/18/2007 5:33 PM.

1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine