performance upgrades

hey, i just got a 04 RL and i was wondering what i should do to it first....i was thinking about adding on a glass pack to make it sound better but other than that i have no idea what to do for performance wise help please?

deleted, posted same thing twice Go Here: http://www.redlineforums.com/forums/performance-modifications/38041-best-way-spend-800-a.html