that truck had the 8.0 ltr 496 bb, with a custom turbo set-up. same motor my dad has in the 02 silverado, - the turbos. I drove the 6.0 and was happy, after the first 5 feet in my dads truck....
the 6 has nothing. hahahhahahahah
the allison is the best auto tranny out there. it drives/shifts the EXACT same I would. I repeat EXACT!!!!! there's nothing like pulling a travel trailor up a hill, passing people while doing 80, and only be at 3000 rpm. hhahah
oh yeah, nice truck man... I can talk big trucks all I want, but your gas mileage kicks ass!!!!