Just4Effect makes sub-woofer enclosures for Jeep and just for Jeeps. You can fit two 12 inch subs in the back of your JK, TJ, YJ, or CJ and still have a back seat. We build Dual 12, Dual 10, along with single and trunk style enclosures for both 10- and 12-inch Subs. Each box is custom made to the specs of your sub-woofer.