2005 Dodge Ram 3500 4x4, 5.9 Cummins, 4speed Auto. John Deere with a 7 bottom plow. 

JD = 4.5 to 5 mph = 380hp - Dodge = 3 to 8 mph = 345hp
This was just to see if it would even work. It seems to work better then the old Alice 5050.

(Comment: Daniel Petsinger: This is a real video, and this plot of land is an experimental crop plot. I have had some people around my area bet me that my truck couldn't do it, so I just wanted to have proof that is could. Now is there better ways to do it, yes. I however had time to kill this day. I would not recommend anyone try this as it does void all warrants on the truck. For me I had a good time trying this, and no I'm not "retarded", I'm innovative!)