early a body fmj spindle & master cylinder choose . modification

ok .. does anybody know when using the fmj spindle for the disc brake swap ..which OUTER tie rod to use , the 1966 or the one that fits the spindle[ 'volare ]read many post... one say fmj on the out side , ,also considering the 8.8 swap .. heres my question on that since i cant find it .. when changing to 4 wheel DISC , can you run manual brakes [non powered no booster ]i know about the proportioning valve or adjustable valve , BUT what about the master cylinder ? many say the 74 charger BUT ? ALSO SINCE 4 WHEEL DISC , IS THERE A CHECK VALVE ON THE REAR BRAKES[ ON THE CYLINDER] YOU CAN REMOVE ? OR what is the EASY way to do it .. , i know they have boosters but dont want to complicate things in a already tight engine compartment thanks all, you help will be greatly appreciated