10-bolt disc brake rearend question

[topdown99]

Since I need a new rearend, I found a disc-brake rearend out of a Camaro (approximately 62" wide according to the 10-bolt data I have) for about the same price as most of the drum rearends that I have seen.

It makes me wonder - if I run disc/disc, do I need to go to a new Master Cyl since I had/have drum/drum?

no matter what I do, to get it back on the road I have to get a new rearend or completely rebuild and re-axle the 10-bolt I have, so that purchase is inevitable... it just made me wonder if I can just make the disc/disc swap and leave the rest as-is and have manual disc/disc.

-Ryan