I custom tune my own truck with EFI Live and am impressed at how much power the stock components can handle.  Some other mods include a 6" suspension lift from Top Gun Customz, 35" Nitto Trail Grapplers, 5" turbo-back muffled exhaust from Rollin' Smoke Diesel, Megacannon Stage II intake and S&B intake elbow.  Inside the cab I traded the factory radio for a Kenwood DNX6160, added a Memphis SR1.250 amp and Kicker Comp 12" sub.  Comfort was achieved by losing the factory cloth seat covers and adding more padding enclosed in custom Katzkin seat covers.