I'm new to this forum, but have owned a 1983 Malibu wagon since 1985. Yes, it has about 300K miles on the original 305 and 250 trans.The question is concerning the doors. Just by accident, I have located a very nice almost rust free 1985 G body Bonneville 4 door sedan that had an engine fire. From what I have read, I think the front doors would interchange, right? But I understand that the windows in the rear doors are different. Would the door skins on the back doors and the rest of the door be the same, if not the glass and window frame components? Anyone out there got this mix and match figured out.