what Prosche MC works on Supers???

[Eurolook71]

I've read this around here and different forums too, but which master cylinder will bolt-on in place of the stock one, with out modification. Please give years that will work too. Also, would it be ok to run with drums at all four corners, until I can get discs? Just curious since I'm replacing my MC this weekend and need to know which will work, the best place to get one, and a price to expect. Thanks guys!