explain the failures. luck usually has little to do with it. 4.33I engines will not tolerate overheating (240+degrees) other than that we have had very little problems and we have a bunch out.. BTW a 6 cyl is 20 HP shy of the 433I and about 20 less torque at 2200. Now a 6 cyl turbo with a coresponding pump...... Have to change the entire eng pod w_hyd pump and the main drive belt will have to be matched. We have one of these converted,,, pretty nice.