[89IROC&RS]

i always suggest that you match your stereo system, be it pioneer, sony, alpine, infinity or what. Miss matching system parts never really work all that well together. If you got Pioneer speakers, then i suggest getting more pioneer speakers and a pioneer head unit. You wont need an amp if you get a nice enough head unit, but if you want a amp for whatever reason then a pioneer four channel amp will do you quite nicely.