This is my 1993 Ford F350 6x6, this is a true triple screw 6x6.

The truck's frame has been stretched 42" total, the box also had 42" added in the middle. Stock dually fenders were extended and moulded to the box sides.
The F350 was painted with 7 gallons of Dupont white base, then 2 gallons of purple pearl with purple flake, then cleared with 5 gallons of Dupont high gloss clear. It looks white but when the sun hits it, it turns purple.

I built a custom rear "subframe" to carry the second rear drive axle, which can be engaged at will. The axle "tilt" is controlled by air cylinders from the cab.
The truck has 8" if suspension lift, 3" of body lift, plus an additional 6" of on demand lift from a custom built airbag system. It also has an air parking brake that I designed myself that dumps the air when applied like a rig.

It has a flame thrower system in the stacks the will shoot out flames over 5 feet long, it really looks cool at night.