I've got a booster from a mid 70's truck and dual res master under the floor. I have a V-8 with it's bell housing and have no clearance problems. I'm using the original location and linkages too. It's on my 1.5 ton truck.
If you stay with the single pot master, you could go the hydra-vac route,
Scott

Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!