In the mid 1950s Autocar offered rugged "pit fenders" for their on-off road contractor's trucks. You'll also notice the belly pan guard to protect the engine. Toward the end of the 1950s a more efficient higher capacity radiator was an option. This was mounted outside outside the sheet metal and is generally referred to as a "hard nose" either on Autocars or Macks

The body here is a Marion 13 foot long 12 yard capacity part number 26288, the truck is number 95130.

We currently make two dump trailers, a 16 and a 28 yard. The larger one is shown here hooked on to an Autocar DC10364 heavy duty tractor. We've been selling this trailer for years as a plaster casting but now we're molding it out of urethane so it's easy to cut some of the load out and put in construction debris.
The dump trailer is kit number 95078, the truck is 95126

Here's a new Rock Dump body for on/off highway heavy trucks. Check back in a few days to get the complete specifications. It will be offered with a hoist system or as just a one piece casting.

Length of Body OA: 16’-10”
Length of Cab protector: 4’-8”
Recommended CA Dimension: 120”
Width of Body OA: 108”
Capacity SAE Struck: 15 cu. yd.
Capacity SEA Heaped: 19 cu. yd.