Good afternoon all. Stephen from Haddonfield NJ. Just picked up a 2015 1500 GMC Denali with a 6.2 liter in her. Planning on performance up grades first. Exhaust system, cold air intake, mass air flow sensor, throttle body spacer, and a programmer. Then onto the suspension (not sure if it will be a leveling kit or 4"-5" system yet). I have a set of Radd 22" wheels, they either get Nitto Trail Grappler's or Toyo Open Country M/T's. Cheers!