If they are direct marketing to the military, EPA and emissions mean nothing. All the military trucks are not epa regulated.
The EPA actually sued the DOD over them selling the military surplus trucks here in the US, to civilians, and had sales shut down for a little while. I don't know what they came to for a agreement, but they started selling them again. Its always a win for the taxpayers when one arm of the gov't is suing a different arm of the gov't in the gov't courts.
Looks like quite a engine, big 4 cylinder- turning out 1,000 hp at 14 liters.
The cummins 903 that they pictured is used in the Bradley fighting vehicle, they also still use some DD 8v92's two stroke in the big tank haulers. The old M113 personnel carriers use a 6v53 that they still make new engines for them. I think the airborne still uses the m113 because they are so light- easier to fly in.
Sounds like this is a new engine design for the new personnel carrier they want to build. They typically wont fix anything engine related if its complicated in the machine, they want it as a "package", unbolt one engine, throw it out and slap the new one in. The repair facility back in the states can fix whatever is wrong. It sure wouldn't be a good design to try to do a inframe on with it in the truck.