Well ive decided to go with the 8 foot three-quarter ton truck, to carry my soon to purchase either TUNE M-1 or HAITUS ,both pop up truck campers, i want to stay at about 75% of max at least , this will be a trip truck and trips to the lumber yard or mostly parked when home so MPG isnt a big thing for me with this truck, ive had ram1500's and ford f 150's and toyotas ,never had a chevy or GMC , but i like the double cab build ( alittle smaller second cab to help make up for the 8' bed) engine any good, 10 speed allison tranny a good one ? what would you get in my situation ?thanks guys