You might try surpluscenter.com in Lincoln, Nebraska. You might contact them, they don't have them in their online catalog but they used to sell aircraft starter/generators and engine driven welder conversions.
I am currently running one in a 83 subaru station wagon. I sucessfully ran it using a Paul Holmes PWM controller on 104 volts to the armature and sepex field at 24volts. I fried the controller when I added batteries to bring the voltage up to 180. Until I get a new controller built, I am running it on 8 big car batteries at 24 volts using only a on/off contactor and using the clutch and 5 speed transmission. It actually drives quite successfully in this simple mode. The motor is enclosed in a sheet metal cover and cooled with an electric radiator fan.
I am currently running one in a 83 subaru station wagon. I sucessfully ran it using a Paul Holmes PWM controller on 104 volts to the armature and sepex field at 24volts. I fried the controller when I added batteries to bring the voltage up to 180. Until I get a new controller built, I am running it on 8 big car batteries at 24 volts using only a on/off contactor and using the clutch and 5 speed transmission. It actually drives quite successfully in this simple mode. The motor is enclosed in a sheet metal cover and cooled with an electric radiator fan.