Custom xj sub box for 2 12's Dec 3, 2007 2:04:28 GMT -5 Select PostDeselect PostLink to PostBack to Top Post by rckrdyxj on Dec 3, 2007 2:04:28 GMT -5 I built a custom box for my xj that fits tight between each wheel well and right up against the back seat back. i want a slightly smaller box for more room for tools and such. Non ported. $40.