We have about 10 or so Hercules JXD 160's...
They are the military version used in the Scout Car, M-20, M-8, and a few other trucks.
It is the same as the White Hercules 150A civilian version.
Also used in all the old wooden Chriscraft boats. Hard as hell to find parts for. That said, I have about 6 sets of new pistons, 4 new cranks, two used, 20 or so new camshafts, 8 sets new in and exhaust valves. Boatloads of bushings and bearing, 1 set new timing gears, and a bunch of miscelaneous crap.
What I am looking for if you come across them, are the military versions Generators.
They are like hens teeth, non existent.