Ken, That almost looks like the 52 I picked up not long ago, I was looking at it this weekend wondering how I was going to stop a lot of it. That truck is mostly for parts but, I have an old 440 from the 78 motor home that is being used as a storage shed and I was thinking of trying to fit it into that 52 with the 9 ft. bed. . My 48 has that rust bed problem that I have to address real soon.
Pics Had to do a double take there with the first couple of pics, dang! sure looked like my truck for a min, apart from mine not being rusty like that, same spare tyre mount though and no dimple in the rear arch too!