WOW! I also did my own shootout. Here are the results. I have a 99 automatic with 3. 54 gears. I pulled my friends boat up to MT. charleston (weight 3500 Lbs)which is a good grade outside of las vegas. The 99 would pull about 60mph but would shift in and out of OD with my foot into it trying to keep that speed. Not Bad I guess. Now for the 01 H. O 6 speed. Same 3. 54 gears. I Pulled the same grade In 6th gear at 65mph and never downshifted. This truck is Amazing! I'm sure there are a couple of reasons for this. More power,torque and not alot of power loss through the transmission. Needless to say I just ordered the H. O. 6 speed. I will shift a little more for that power compared to my 99. And Pay a little more also...