I drive a 1.5 ton Loadmaster daily.I run 8.25x20 rims tires.This truck humms down the road at 55mph, I have a babbit low pressure 235 motor hei dist. Ford yf carb and an alternator. A kick [censored] stereo and lots of strategiclly placed insulation in around and under the cab. I balanced the drive shafts and tires.Oh ya I run a tach which reads 2900 at 55 Just did a trip onto the prarie from Evergreen CO clocked 350 effortless trouble free miles. With my travelling truck buddy Manny. He drove half the miles I had to pry him out of the drivers seat he was having so much fun. My next project is to build a camper shell for the almost 10 ft box. Best truck I ever built. I am going to repower it when the babbit pounder dies. I did drive it at 3300rpms for 15 miles nothing let go,seems like a real good motor.1tonnner Chris