Hey guys, just did the CSRP disc brake swap on my 70 coupe. The car was originally drums non power, however, I rescued an original 70 booster and purchased a disc master cylinder from CSRP. So as the car was non power drums and I want to go to power disc drum will I need to modify my firewall and pedal support to accept the new booster? If this is the case, could I get away with using manual discs until I can make the modifications later?