When I got my '63 it had an 8 pointer in it. The tubes ended in 6X6 1/2" steel plate. There was a matching plate on the underside of the floor for each one. So the floor was "sandwhiched" between 2 plates and the tubes were welded to the top plate. 4 large bolts held each "sandwhich" together.
The cage has since been cut out and is in cold storage for possible future use.
The cage has since been cut out and is in cold storage for possible future use.