What M/C for a 4x4???

[b454rat]

I swapped in a front axle with discs brakes in my 62 Burban, which of course had drums front and rear. I need a master cylinder that will work with the disc/drum, but not finding much. The M/C on it now has the the clutch slave cylinder on it, so I'm going to have to get a seperate one for the clutch. Did anybody do this swap before?? What did you use, difficulty rating, etc. It drives now, but scary with one wheel brakes, and really want to get this going.....