early 60s disc brake swap master cylinder

[66gmcguy]

Forgive me if this has been talked about already. I couldn't find any threads on this topic though.

I have a 1961 Suburban 4x4. It has drum brakes in the front, and it has the combo brake/clutch master cylinder. I am wondering if anyone has swapped in a disc brake axle and kept the stock master cylinder without any problems. I know typically you are supposed to change master cylinders when doing disc brake swaps, but since this is kind of an oddball master cylinder my options are limited. I've seen the adapters to mount a brake booster and newer style master cylinder but something like that is not in the cards for me yet. I am trying to do this as cheap as possible to hold me over until I decide whether or not I'm going to keep this rig.