Not too sure, but I put together a nice 3-point platform generator which runs off the PTO of my old Farmall H. Works real great, thanks to a 1:2 speed increaser gearbox I bought cheap at a surplus store. I run a 13" V-belt pulley off of one end of the gearbox and a 4" pulley on the shaft of the Gen. At about 800 RPM on the tractor, I can get 3400-3600 RPM at the Gen. It puts out enough 120 VAC to run most household items when the elec. goes out, plus it will go anywhere the Farmall will go.
I would think a person could do this with our Dodges with enough skills and time and parts.