[jjmorrse]

The main difference between doors is that relatively early on they needed to revise them to make room for electric windows. Please check, but the 73-76 are different than later ones, and 78-80 are a little different from 81-86. At some point, the glass thicknesses varied, and there were some differences in the vent assemblies. The dashes on 73-80 were more rounded than 81-86, so I think if you want to change, you will need to change more than just dash pads. Hope this helps. It is from memory, so please verify.