Split windshield, so before 54. And as another member stated, it has vent windows, so if the doors are original, that would make it after 51 or so. I m going to guesstimate that it is indeed a 52. I m accustomed to seeing the fuel tank in the cab, but it’s not surprising to see an external one added either. I ve found that suburban and blazer tanks work well at the back of the frame.
