look at the back of the stock deck and see if there is an extra set of speaker wires... the deck may have powerd it... if thats the case then you will need an amp.... just one that will put out 150W max cuz stock sucks lol... oh shit maby i should have red that but just see how much power it takes cuz most amps have a speaker imput up to like 50W... you could do it that way and just turn down the lpf