I started out with the MEGABLOKS HALO Warthog red troop transport set, and then proceeded to build it out of actual LEGOs. I used a white color scheme, because that was the easiest color to get from one BrickLink store. The people in/on the truck are part of my spec ops team used for brikwars.
As you can see, I have modified the suspension elements, and added weapon holders to the sides. Also, a winch was added to the front, for more realism.
Here you can better see the seating arrangement, and the details for the gunner. The mounted machine gun fully swivels and pivots.
This shot shows the flex of the suspension. I used 2 blue rubber bands going across the bottom, front to back, to keep it raised. It is ramped up on a prototype of a self-leveling 3-link suspension design I want to use on a jeep.
The last shot shows the other side of the suspension, and also the sniper rifle of the passenger. The only thing I was slightly disappointed with in this model was the front suspension reaction when going over obstacles at speed. But then again, I can't complain too much if that is the only thing I don't like...