[Snailed]

There is no simple answer. Some parts fit only one year, others fit from 63-87 or possibly more.

Sometimes the changes that might keep it from being "correct" have nothing to do with if it will work or not. I use the NAPA dealer website to find a part and then can see what that part fits for vehicles. There are other databases like this out there and that might help you narrow down some of your parts. You gotta do your research and understand how stuff works, especially if you're cheap haha