I have the old D-Series 6x6 mod but it isn't too happy at this point. The parts options are lacking and the middle axle isn't actually powered. Also think it would be cool to have some more extreme variants like a 6 door version lifted on 48" tires. I personally haven't a clue as to where to start on making any sort of mod for the game much less a modified truck (would love to figure out how). Also don't know if its even doable, was just thinking it would be a blast to drive, off-road, and smash to pieces.
That Would be Nice, But For Some Other People, It Wouldn't Be Suggested To Use As Much. But Who Knows.