How bout a '51 and '53, got that out of the spec. sheet body
dimemsions. and took a quick look at mine '50 which looked the
same. Since they're only talking an 1 1/4" on each side it well
might have just been in the uppre cushion band that they
widened it. I don't think the earlier cabs are actually
2 1/2" wider.
I'm not in a position to start trearing either on of my truck
apart right now to take measurements so maybe some one that has
their's in process or in a heated garage can follow up.
Denny Graham
Sandwich, IL