I got the 5100 info from the trim on the sides of the cab. the wheel base is 12.5 feet. tire size is 8.25-20.
The plate inside the drivers door states that the gvw is 16000lb and
the serial #ss4f017003 and agrees with the # on the minnisota title .I can not see where the frame has been altered at all.I can tell that it has been painted at least two times. It also has a heater that draws air from the side vent on the pasenger side.My 54 pick up did not come with a heater