I just finished up my sound system with a 50 watt built in bazooka tube. The tube came with all of the wiring and fitting you need. I do not need EARTH SHATTERING BASS, so this little tube did the trick. I took the old spare out and mounted it right there. Pepboys has a 21% off sale through their website so the tube only cost me 129.00 out the door, not a bad deal