SBP vs. BBP

Parts difference

UCA...........................72 & earlier only
UBJ............................72 & earlier only
Spindle
Brake drum, bearings & hub

If converting to disk brakes add the following:
Master cylinder
Brake balance block
Front brake hoses
68-70 B-body or 73 & later A-body disk brake assembly
(include rotor, spindle, caliper, & related hardware)