Just bought a 53 1/2 ton frame, I think? Looks like it is an ad frame, still has the rear end, springs, drive shaft, and front end on. Any markings I can look for to be certain? Our 53 doesn't sit on an ad frame, so I can't look there. Anybody got a nice picture of an original frame?

https://sites.google.com/site/bluejaygarage/home
53 half ton http://s159.photobucket.com/user/sworden73/library/?sort=3&start=all&page=1
72 Nova SS sold
75 Corvette
52 Chevy Styleline Coupe