Here is the 5010 Grandpa bought new, has had the cab and an M&W turbo on it since it came home.  Dual 18.4x34's, all 4 loaded, plus weights.  I don't know that it's been dyno'd but it pulled everything our Case 1370 did when I was growing up.  Most in the neighborhood were still farming with M's and other 30-50 hp tractors when Grandpa bought it.  I know of several 5020's that were in the area growing up, this is the only 5010 I know of.  Dad added the halogen lights on top of the cab to get a little more light when he planted wheat late into the evenings.