here is some more info,

Last yr i changed from man 10in drums up front and switched to man disc, using GM calipers with a 2.5 bore.

Now i want to add a pwr booster from a 67 dart w/drums.

can i use my old brake rod? or do i need one from a pwr brake car?

also what MC? cast or alu? whats would be the difference in performance from the two?

what bore size? under 1" ?

the original MC i beleive has a 15/16 bore.

the rear brakes are 10 in drums also.
what do you think