So if i put a power booster on my car with drum front and rear,, do i need a prop valve, , i was told that if i wanted to add disc in the furture i would have to changethe master cyl,, why not add it then? ?. If i go that way, , i say drum drum will be just fine? ?.

Thanks

1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny