do you have the 6 disc cd changer? if you do, i know you want to keep but i recommend you get another headunit for better sound quality. alpine i suggest but anyways about the subs. well, of course everything depends on your budget. but lets say you didn't have big money problems and since you just want one sub i suggest the 12" kicker solo baric L7. man im telling this one sub is all you need. these things give deep bass with sound quality. this sub you can get around for 200. an amp just get a kicker amp with it as well, probably the kx400.1. i think thats around 220. other good brands are jl audio, rockford rosgate, adire, etc...there are plenty of brands out there. good luck!crazy kid said: