Would 1968 and 1969 tail lights be interchangeable? They appear to have the same assembly shape, do the mounting screws line up? Interested in swapping the 69 lights out for a set of 68 for the different look.

67 68 and 69 interchange in the body. Wiring is a little different but you should be able to work that out.
The trunk trim will need to be changed to look correct if you have trim or want to do the swaps.

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Hyper_pak

On Valiants this should be a no problem from 1967-1971-ish in a valiant as they use the same profile buckets (68 having the
cool 3 square outlet bucket).

Darts are a little differents as I think the 1967 Dart reverse lights are in the bumper...

Thank you