75 Duster Armrest Question

The base of mine was crumbling, so when putting it back to the door it cracked out and wouldn't hold (just the one side, luckily).

My question is, what armrests will fit my 2 door base model?

Will it be just Dusters? Dusters from other years? If I replace just the armrest base, is that difficult, and what year bases fit?

Thank you! :coffee2: