2005 Chevrolet Colorado 4dr Crew Cab Z71 LS 4WD SB (3.5L 5cyl 4A)
I did a lot of research between the Tundra, Frontier and Colorado, and with the latest GM discounts the Colorado wins because it gets better MPG. If you need to tow anything over 5000# you really need a full size pickup, and although the Colorado tows less that the Tundra and Frontier, it feels just as tough.
Engine, this engine is great because I am getting 24 mpg on the highway and 18 mpg in the city. It is smooth and has a lot of torque at low rpms.