I can't remember taking any out there for you (unless they're in the back of that silver '75 Duster of yours), but i'm sure i will have some that work at any rate.
However, i probably have at least 10 sets to choose from for under a grand per set...................lol
(You know me, master hoarder extraordinaire)
I would be willing to trade for an excellent running 440 H.P. engine and 2 bumper bolts straight across.