D400 with a Slant, and and L-1000

71 series Detroit in the cab over.

Nice Dodges!!!! In can't believe the water truck with the /6 doesn't have a 2-speed rear end.

It looks like it has a Dana 70 Rear, most likely has 5.13 or 5.38 Gears or possibly 6.17's. Top speed is somewhere in the 45-50mph range.