A few of you already know I am in the market for a new med. duty truck. I will be having a look at an 05 International 4300 (195hp) with the 466 dt motor, by all sounds of it this is a great motor. It has 125, 000 miles on it, Allison auto tranny, hydraulic brakes, 22.5" lo prof. tires and a 5:57 rear axle ratio. Total gvwr is just under 26,000lb. I have made plans to have the rear axle moved forward to a CA length of 108" and placement of a new dump unit. My thinking is if there is not enough power in this motor, how easy, expensive etc is it to increase the power in the motor. Is it advisable or should I just leave it be. Any thoughts are appreciated.