This 2015 GMC Sierra 3500 dually wanted several upgrades for performance and a more aggressive look. We started this build with a ProComp 2.5” leveling kit. Next up we went with the Mayhem Monstir 20” dually wheels and wrapped them in Toyo Open Country RT 33/12.5/20 tires with a set of spiked lug nuts. For some added lighting we installed flush mount cube LEDs to the rear bumper and a 12” double row LED bar to the front bumper. Then for the performance side of the build we went with an EZ Lynk programmer with PPEI tuning, aFe Power fuel pump and filtration system, S&B cold air intake system, MBRP turbo down pipe, and an aftermarket exhaust system. Lastly we went with a Kleinn train horn system with on board compressor.