Welcome to the Stovebolt. Lots of advice here and just about any question gets answered. My 49 Suburban has the barn doors but in a previous life it had the clamshells. The cables and pulleys for the tailgate are still in the side walls and I can see where the upper and lower hinges were. So a previous owner took off the clamshells and installed the barn doors. Your situation is just the opposite and it would not be a simple bolt in but it could probably be done. Tim Lederman among others on this site are very knowledgeable on Panels and Suburbans so his advice is always sound.
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