jd i was on the same boat as you. stock was good enough for me but i decided to do a cheap sound system upgrade. i already had an aftermarket deck. pioneer navi hu. i swapped stock amp and sub for an mtx amp and sub combo 2 10s each running at about 250rms. speakers i used infinity reference speakers. i am really impressed with this setup. im not a sound picky guy. amp+speakers+sub= 5-600 bucks. forget the exact cost already. but the sounds is good.