4 wheel disc brake using stock MC

IF you like the pedal feel it should work just fine. I think the 72-down disc cars have a valve to the rear after the distribution block?

Just got my rear set up from Dr Diff, Cass is great. Just email him. I had 73-up disc/drum on my car and am now all Dr Diff. Cass recommended buying a Drum/Drum Distribution block and replacing the disc/drum I have now. I have have an adjustable portioning valve and he suggested ditching that too. I've gutted proportion valves on Fox Mustangs and ran an adjustable to the rear and that worked fine. I figured id replace it with a distribution valve and pass the disc/drum off to someone who needs it.