FASS Titanium Signature Series 165GPH Fuel System for GMC Chevrolet 2011 2014 Duramax 6.6L (600 1000HP) Cabela's Utilizes factory bellows to accommodate 1989 Chevrolet C1500 Scottsdale Utilizes factory bellows to accommodate engine movement for greater durability The new TITAN system comes with a universal filler kit featuring an attractive brushed aluminum door that can be installed on the vehicle's exterior sidewall or on an inside wall of the truck bed This is where a Titanium FASS Fuel System comes in to help By doing this we have less than a 2% failure rating with our motor and a design that implements unique design features you can only get with FASS Fuel Systems