Originally Posted by enjenjo
If you have a 75 to 79 X subframe, yes. But the A and G, and S body spindles are shorter, increasing the camber gain on body roll, the tires will lean in a lot more at the top when the body rolls. I would not recommend using them.
If you use a B body spindle, it bolts in the X body sub. If you want a 4.5" bolt pattern, use a 72 mercury Marquis 12" rotor, with the B body inner bearing and seal, and a 90s Camaro set 34 outer bearing. It all bolts up, and will work with the GM caliper.
1 64 to 72 A and G body, 68 to 74 X body, and 67 to 69 F body all use the same spindle. all have 11" disc, or 10" drums. drum spindles can be converted to disc with minor machine work. These can be front or rear steer depending on application, and which bolt on steering arm is used.
2 70 to 82 F body, 73 to 77 A and G body, and 75 to 79 X body, and 78 to 96 B body with a 4 3/4" bolt pattern, all use the same spindle. These all use 11" disc brakes.
3 71 to 77 B body, 78 to 96 B body with 5" bolt pattern all use the same spindle. These use 12" disc brakes.
4 78 to 87 A and G body, 82 to 94 S10, use the same spindle.
All number two and number three spindles use the same ball joint, and tie rod end taper, and are the same spindle height. they functionally interchange.
Number four spindles use the same ball joint and tie rod taper as number two and three, but are 1.5" shorter in height. Switching a 2 or 3 to 4 is not recommended, but switching the other way, number four to two or three, works good by reducing camber gain for better handling.
If you want Ford brakes, mid 80s Crown Vic spindles will fit by using the Crown Vic lower ball joint, which requires some machine work, and the Crown Vic tie rod end. These will be 11" disc brakes, with a 5 lug 4.5" bolt pattern.