How interchangeable are body panels and general pieces between late 70s- early 80s GM B-Body sedans? I need to replace the trunk lock cylinder in my 1979 Pontiac Catalina, and I may need to eventually replace my driver's door, as rust is starting to come through a bottom corner. I know the Catalina was a dying model in its last iteration, 1977 to 1981, so it may be tough to find many other usable Catalinas to pick from. I know the Oldsmobile Delta 88, Pontiac Bonneville/ Catalina, Chevrolet Caprice, Impala, and Malibu were all B-Body cars at that time, so I figured those might broaden my options.
Junkyards should have the Hollander interchange manual to look this up for you.
https://www.hemmings.com/stories/article/hollander-interchange-manual
Look up on the net, junkyards out west, like Nevada, Arizona, ETC. Where salt isn't an issue.
