Do you know where I can the door latching parts for the various doors for a 1974 Dodge Maxi Van B200? The locks work fine but the latches won’t disengage where they hold the doors closed.
Look into the publication “Hemmings Motor News”–you can find many obscure parts for much older vehicles than yours. They’ve been helpful for my 1949 Cadillac. They also have a website, www.hemmings.com, but you have to subscribe before you can see where to order parts from.
Try a junkyard situated in a rural area. The urban ones usually have too much turnover to still have something that old laying around, but the one near me has about 3-4 acres of old Dodge trucks and vans.