Mid-70's full size Chevrolet passenger (about the same weight) , drum/drum manual master...has built-in residual valves. The actuator rod hole is deep in the manuals...shallow in the boosted. The FoMoCo M/C will have a different distance between the two mounting bolts. Brackets are set up for the GM unit.
Routing your split is a matter of personal choice. You would be wise to replace the front lines as well as the rubber flex hoses. These are going to be the most critical but you can judge if all lines and rubber should be changed.
Hope this helps.
Dave
