The cleanest interface (if it works) would be to retain my booster and bolt-up the new master.
The way this read, all Chevs have common master mounting centres…
View of front of booster- All have this 2 stud spread which came on original GM muscle cars
Measurement applies to PB7537 (7" dual gold), PB7537C (7" dual chrome), PB8531 (8" dual gold) , PB8531C (8" dual chrome), PB9021 (9" single gold), PB9021C (9" single chrome) , PB1002 (11" Gold), PB1002C (11" Single Chrome)
3.375" center to center on the two front bolts
J