Question on mopar underseat subwoofer

[southern comfort]

I have recently bought a 2003 renegade, and would like to install a mopar underseat subwoofer. I noticed that there is a special adapter for the 2003-2004 models, but it is no longer available. Does any one know if it is possible to make one, or modify the subwoofer wires to work for the 2003. I'm pretty handy at stuff like this, but figured I would ask before I bought.
Thanks

 

[guyer]

I WAS THINKING ABOUT GETTING THIS SUBWOOFER FOR MY 2005 JEEP LIBERTY SPORT, BUT THEN I SAW HOW MUCH THEY COST AND I STARTED TO LOOK FOR AN ALTERNATIVE. I FOUND A SOUND ORDNANCE B-8PT POWERED SUBWOOFER ON CRUTCHFIELD, Sound Ordnance™ B-8PT 120-watt compact powered subwoofer at Crutchfield.com, THAT FIT PERFECTLY UNDER MY DRIVER AND PASSENGER SEATS. THEY ARE REALLY GOOD SUBS. LET ME KNOW IF YOU HAVE ANY FURTHER QUESTIONS

 

[LaneKJ]

Just put one in a ported box in the cargo area?