Futs

I have a '95 Sport edition, and I recently installed an XJ Pod from Select Increments. It went in great and fits perfectly, but now that my subwoofer is against the wall of my Jeep it is causing some vibration from the paneling on the inside. I've eliminated a good amount of the rattle simply by adding insulation around the window and behind the pocket where the cabinet is, but I am still getting some rattle from the paneling rubbing against one another.
Is anyone familiar with the XJ Pod or knows how to eliminate the rattle caused by it's location? It's not quite a problem that could be fixed by Dynamat. More so a method of securing the paneling on the inside, or, if there is anywhere to buy a panel that is one solid item instead of 2 overlapping in one section, that would be wonderful.
Thanks!