You have what is commonly called a S 80 Jumbo cab.They were made for the American market and governed to 25 mph.They have a 547 cc engine and 4 speed trans with a transfer case locked in low range to limit speed and also have a speed limiter involving an electrical box at the speedometer cable trans. end connected to a solenoid in the carburetor that shuts off the fuel at 25 mph.These speed limiters can be over come.Mine will do about 50 mph with 14" tires.
