When we bought our 1 ton, we got the dealer to throw in the Titan tank as the deal maker(told him we couldn't believe that an engineer would put a 27 gal in a truck that was intended to either tow or work). We now have a SD f350 lariat CC SWB with the ultimate package. 50 gal Titan tank, Firestone air ride bags and just ordered the flip tonneau cover. Happy, happy, happy