[miker98038]

Just my 2 cents. The old single masters had the brakes balanced in the design. So a “distribution” block is fine. A lot the the more modern ones used “combination” valves. Some had metering for brake balance. They all look alike, but they aren’t.

I use separate residual valves, and when needed an adjustable proportioning valve. Then I know what I’ve got.

So if the one you use is just a block, fine. And check if there’s already residual valves in the new dual master. A lot had them, and typically they can be removed. But you don’t need 2 in the same line.