yes the truck doors will interchange. the 81-90 fit for sure and the older ones will swap in but dont have the same body lines. i think even the 91-93 fit but there are some changes in the door that i cannot guarantee all panels and doo dads will work or attach correctly. good luck
I kow the 81-90 will fit. Before 81 they had different body lines. If you have a selection then I'de go for a 88 or newer door. They have an access panel on the side that makes it easier to get to the lock mechanism hardware.
RamchargerCentral.Com is a Dodge truck community built by a vast number of experienced owners. Whatever you're thinking about doing from routine maintenance to full-on restoration, odds are somebody around here already has. Originally focused on the Ram Charger / Trail Duster, our members own, drive and wrench on Mopars from the 40s to the current day. It's not what you buy, it's what you build.