57ExtCab,
The 1955/56 1-1/2 & 2 ton TF fenders are about 39" wide measured across the bottom. The 1957 1-1/2 & 2 ton fenders are about 42" wide measured across the bottom. The reason they are different is in 57 Chevrolet moved the front axle 2-1/2" forward to accomadate the larger tires that were now available and to keep then from rubbing the cab on turns.
The FT trucks all use the same hood so the front to back measurement will be the same. I'm not sure what you need to do about the grille...
Hope this helps.
Mike B
