Slow truck..
I am sure my truck will be a slow truck. It takes time to shift gears, so I doubt I could win any drag race with any automatic. My main goal is when I am pulling my 5th wheel, and going up a long 6% grade, that I do not have to downshift past direct drive (fourth gear) The six speed has lo, 1st, 2nd, 3rd, 4th, od. Fourth gear at 2000 rpm is around 60 mph. I have not pulled anything with my truck yet, so I do not know how it will act up a 6% grade pulling 10,000 pounds.
When I get the urge for speed, I have two cars in the garage for that. One is a 1960 Ford Falcon with a 428SCJ with nitrous, C6, and 9 inch differential, posi. The other is a 240Z with V8 engine, set up for road courses and top end. I do not plan on souping up my truck, unless something terrible happens like I get passed by a chevy.