Full front suspension rebuild, or not?

"ridiculous amounts" of negative camber isn't something that's super easy to achieve with all the stock components if they're in good working order. I would be suspicious of the LCA bushings right off the bat if all of the suspension stuff is stock. It would also indicate that the car is probably sitting a lot lower than it should be with stock parts. Torsion bar suspensions do change alignment geometry with ride height changes.

If trustworthy alignment shops were easier to come by I would say just take it in, but the fact of the matter is that most of the alignment shops out there don't have the foggiest idea of how to do a proper alignment on a musclecar era mopar. So unless you already have a shop you know and trust, my recommendation would be to spend some time inspecting it yourself first. Even if you're not super familiar with the suspension, a thorough inspection will at least give you an idea of what to expect when the alignment shop inspects it.

Also, be sure that any shop you take it to will do a non-stock alignment on the car. The factory alignment specs are for bias ply's, and they are completely wrong for radial tires. So, if you're running radials, give them this chart and see what they say. If they say they have to set the factory specs, go elsewhere because they don't know what they're talking about.

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