I have a factory master cylinder that is leaking - the gasket for the cap is bad. Does anyone know if just the gasket is available anywhere? I am thinking about an upgrade to a dual reservoir master cylinder - for safety's sake. I can't afford to do a front disc conversion right now. I'm hoping to use a factory master cylinder (late '60s / early 70's?) and reproduction lines for a "factory" look. I know I will need a different distribution block. Does anybody make a reproduction? I am hoping everything bolts up in about the same place. I received some info from another Mopar forum. Some guys were recommending a proportioning valve. I thought this was disc only thing. I want to get as much info as possible before I begin. Thanks for the help. John A. '64 Belvedere HT