We'll it started as a 126 cub cadet. I built the front frame section myself, 1x2 square tube. It has a 14hp briggs opposed twin vertical fresh off the lawnmower, except I converted it to a horizontal shaft. It has a custom driver for the clutch disk built by a friend of mine. 4140 driveshaft, 6061 clutch disk, 26x12x12 carlisle superlugs in rear and ball bearing equipped wheel barrow tire assemblys up front. custom rear fenders, seat pan and belly and front wieght racks. It will be in the 650lb class with my 7 year old daughter in the driver seat and in the 800lb class with me in the seat.