Brutus my 923A0 routinely get 7.5-8 with my foot on the floor and holding it there, maxing out at 55-57 mph (I've seen 60 on a loooonnngggg downhill). However, 10-11 when driving on roads that force me to run in the 1800rpm range and 40-45mph. Additionally, mine too seems to drive better with 2.5-3 tons of rock in the back.... Steering is always awesome but does seem to improve, transmission shifting is better, brakes are better and the ride is a totally different animal....