Dyna,
1955 had the 5000 series (2-ton) only, then in 1956 they introduced the 7000 (2-1/2 ton) and 9000 (2-1/2 ton).
Tubeless tires became standard issue in 1956, but many new owners wanted the 20" tube type to be consistant with the rest of the fleet. The 1955 5000 series LCF ran 7.50 or 8.25 x 20", 1956 and up ran 8.00 x 22.5" (5 and 7000 series) and the 9000 ran 9.00 x 22.5".
All of the mechanical stuff can be gotten, it's the LCF specific sheet metal that's the hard part.
Glass and Interior parts are the same as the little trucks.
The hood embelm is NOT the same as the conventional cab trucks, it's flatter across the front edge (at least on the 55-57).
LCF's only came with V8 engines, the 6-cylinders were to long.
Hope this helps,
Mike B
