May 29th, 2013.Just remember, you get into an accident at 63 with a tactical truck, and I will bet you some lawyer will come up with design engineering data that says that was the red line, not the intended operating range for the truck. The five tons and deuces are not that wildly different in the design and use concepts, except that the deuce uses a air over hydraulic system and yours is straight air. Other then that, I take it you are saddled with an automatic transmission? The converted commercials like the Brigadier or Top Kick derivatives were probably better designed for road work, but even our 1960's civilian White Construcktors were not overly strong on road braking from high speeds, as they were very close to the tactical trucks used in the Army at that time..... Most trucks in that era depended on the transmission to assist in slowing down or holding the truck to speed on grades, and an automatic would seem less likely to be useful in holding speeds down...Let's hope none of us get to find out through an accident investigation and lawsuit by an injured party's lawyer just what the design limitations were on the 2-1/2 to 5 ton series trucks, as we may all lose out in the end.