I think I'd try to save what you have. If you can even find 48 door skins you'll most likely end up having to do some bondo work anyway after you get them reskinned. It takes a lot of practice to reskin a door without leaving dents around the edge. Without seeing the doors it's difficult to tell you the best way to proceed. I've had the best luck using a torch to shrink metal. I've seen mechanical "shrinkers" that some prefer but I've never liked them. I would strongly recommend taking your truck to a reliable body shop, one that works on classic & antique vehicles if available to get an opinion on whether your doors are savable. They would have to be really bad to be toast IF the bodyman know what he's doing. Good luck.

Save a life, adopt a senior shelter pet.
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Name your dog Naked so you can walk Naked in the park.