lower control arms.

70b7duster said
I just picked up a 65' more door valiant. I have the rebuilt front suspension off my 70' duster from my HDK swap. What's the difference between the lower control arms that make it not a compatible swap?

Nothing.
All A body LCA's from 1962-76 are the same.

Sway bar mount tabs welded onto the arms for 65-72, and then 73-76 would be the only thing different, if running a front sway bar.