Master cylinder rebuild

I would SERIOUSLY consider NOT rebuildiing a master, and when I was young, I've done a few

1.....Agree with above....Consider upgrading to dual master

2....If you insist on using a single, check first, the availability of new or rebuilt masters. and WHY? Because master rebuild kits are not all that cheap. For many years, you could buy a rebuilt master for just a few dollars more than a rebuild kit, AND THE REBUILT is guaranteed. And above the cost of the kit, a kit does not come with a lid gasket, and if you don't have a hone, you'll have to buy one of those