George: question for ya, with the front axle beam mounted flush with the mtd frame and running a 13/6.5x6 front tire are your frames still 4" to bottom of frame rail? This is what i'm running, and i tacked my " homemade frt end" last night. Basicly a close design of the basic acme axle. and i'm right at 4" with jst rolling chassis, less motor and all. Not knowing how low it will go with a bigger engine down the road. Of course common sense would say to just lower the axle to gain height, but trying to stay right at 4- 4.5"...Oh by the way, 1st build for Imow class. thanks