The 158"wb with Single rear wheels had a max GVWR of 8,000#
The 158"wb with Dual rear wheels had a max GVWR of 13,500#
Single Rear Wheel trucks were not fitted with Aux springs or a Governor from the factory.
The Empty/Curb weight would be somewhere about 4,800# +/-...the info pack doesn't give a weight for the Single rear wheel Stake body trucks. Your custom bed makes it impossible for us to give anything more than a guess...take it to the local land fill and drive across the scale to see what it weighs.
Mike B
