these are good trannys, just not heavy duty -think S-10 and Camaro. If you are going to "use it like a truck", you need the 2500 with the 14 bolt rearend and 4L80E. The 4L60only has half the cooler flow in OD, so always use 3rd w/load. To convert to 4L80E, you... Login to read more.