2004 Silverado 2500HD CCSB LLY Duramax--Allison MODS:Bully Dog Power Pup/aFe Stage 2 Intake with Pre-filter /4" aFe SS Exhaust w/5" Tip/ EGR Blocker Plate APPEARANCE:!Molding/08 HD Badges/ 285 Toyo Open Country A/Ts/ SS Nerf Bars/ Black Low-pro Aluminum Tool Box/ Custom Linings Spray in Liner