I am having the same problem deciding. I bought my '99 (1/99 build date) for pulling my tractor to my hunting club. I figure it is in the 12,000 lb range. Probably the most I would ever tow. The route is mostly hilly interstate and then hilly backroads. I am thinking the 40HP HEAVY Tow is what I need.
However, I also want a tune for fuel economy/performance while not towing. Seems like the 80HP DD would fit the bill on interstate, which is where I will be driving most.
Definitely want the Stock, Whisper, Hi-Idle, 40 TOW, 80 DD
That leaves me with one slot. Which one?
This is killing me. I want to order one SOON.
I don't care anything about smokin' tires and rocket launches. Just want a smooth, reliable, fuel efficient truck with some options.
I have a DIY tymar intake and 4" Magnaflo Turbo Back exhaust with muffler, 3" lift running 285's. PCM is NVK2.