Well if you don't want to spend some money that it will be hard to find some really cheap that are good well here's my two cense recently rockford came out with some really good subs that works well with a 2000amp also a cheaper but well known is. Alpine. But if you want a. Good system get. It from jb audio there exspensive but well worth the money I had everytthing from them till I sold my car now I have a 99 mercury cougar with kenwood stereo,six 6x9 rockford punch,crunch amp with two 12 rockford subs. And it sounds great I only spent close to 700 for my system