I used the rock auto link and was able to look up parts for a 72 satellite.Here's what I found
1972 PLYMOUTH SATELLITE SEBRING 5.2L 318cid V8 (G) : Brake/Wheel Hub : Rotor Price Core Total RAYBESTOS Part # 7008R {Professional Grade / 10.97" / 5 Bolts #7008} Front
$143.79 $0.00 $143.79 ACDELCO Part # 18A1351 {replaces 89056485 #19201459, 89056485} ROTOR,FRT BRK DURASTOP; FULL CAST VENTED * Non-stock item--shipping delayed up to 3 business days