Will the spindle and rotor from a '71 Cuda transfer over to a '70 Roadrunner? How about the upper and LCA? Lastly, what would you value this setup, all freshly rebuilt with quality Moon parts and complete from brake line to dust cap? Thanks!

yes they should bolt on.
you don't need the lca and uca for the swap however.

moog?
rebuilt what? upper and lower bj?
rebuilt calipers?
new disc?

The entire front end was restored with all new parts ; ball joints, rod ends, wheel bearings, calipers, seals, new rotors, etc. Will the LCA from E body transfer to B body? Yes, Moog (darn spell check)

The 70 B and 70-72 E body parts are the same, Uppers control arms, lower control arms, spindles, calipers, etc all interchange

Awesome, thanks! Any guess on value?

what size discs?
dr diff lists repros for the 11.75 inch brackets and spindles.
90 bucks for the brackets and 155 for the spindles.
originals don't really fetch more.
so used prices, I would guess 200 at most for the set. 150 would move them.

a-arms and lca,no idea.

but that isn't bundled with new rotors and ball joints etc..

Thanks!