According to the 1948-1956 Parts and Accessories Catalog, the frames are NOT the same. 1948-1952 shows one part number and 1953-1956 shows a different one. The illustrations below also show substantial differences.

 

Well the 48-52 looks a LOT less complicated but you probally could make it work.

 

Nathan,

You said you have an illustration of a 48-52 frame with dimensions. I beleive you probably have this in the book "Ford pick up Trucks - Development history and restoration guide" by Paul G. McLaughlin.

If that's the case, then it's the same illustration i referred to above. If you compare it to the illustrations that George posted - you'll see that what McLaughlin captions as a 48-52 frame is actually the 53-56 frame. No question what-so-ever.

This is what I have emailed to Dan. It should be what he wanted (or part of it), however it won't help J Gibbs.....

Regards,

You're wondering how I know what your source is for something you haven't shown - it's the wisdom that comes with age my boy.

 

Wrong again Fergy. The picture I had showed the body on the truck with demensions similat to the one in the 53-56 frame height.