Alright, I'm doing a disc brake conversion on my Mustang. But I can't find a disc/drum master cylinder besides aftermarket ones(which are hella expensive). I mean, I'm sure I have, but I wanna know 100% before I go buying anything. Everyone says just "disc" or "drum", but how about a combination of the two!?! And I don't trust the idiots at the help desks at Mustangs Unlimited or anywhere else to be able to tell me the correct answer. Grrrr, help!