C body spindles

They're not a bolt on for anything.

I do know of a guy that runs a set on his '70 Challenger, but it was a custom deal for a road race style car. C-body spindles are taller and have a greater SAI. But they also use a different lower ball joint (hole spacing is different). He also runs Viper calipers on the C-body rotors and a few other items. He uses A body lower control arms on the same car, they're longer than E-body LCA's. He was maximizing his suspension geometry...

But, as I mentioned, it was a custom set up that involved some fabricated pieces and a lot of suspension geometry analysis.