Here's the two trucks the 21v spends most of it's time behind. The dodge is mine, it's an 03 cummins 6 speed with nearly 200k on it now. It's 100% stock besides a 4" turbo back straight pipe. Gets about 20-21mpg unloaded and 14-16 pulling, not too bad. The chevy is my brothers, it is a 2009 duramax. It sits on a 6" lift with 22x14 inch rims wrapped in 37" tires.