Debadge or paint the badges with plasti-dip. Blacking out windows / tail lights / headlights. Stickers are supposed to get your more HP but I haven't been able to verify said information. You could replace the interior lights with LEDs or take off your running boards. The list is endless.
Window Visors, paint stuff, remove running boards, new radio, the possibilities are endless! Anything you think of you can do that's cool, just go for it! hahaha