I have an N and the N model is stamped in the front metal plate. It is ground driven by 2 R1, maybe 28" wheels with maybe 6" wide tires. The slingers are PTO driven and the floor scraper that moves the product to the slingers at the rear is ground driven with a "0 to max" lever, conveniently located so that the tractor operator can reach back and set the desired flow rate.
There is a built in hand crank that once the weight in on the tractor drawbar, the crank can be pulled straight up and self locks.
So, what's your question?