Reaching out to you all.... I just received my DC 18 level 6 and am iching to get an enclosure built. I love the low bass and listen to rap/hip hop and 80's/funk. Any one have any recommendations on a vented enclosure specs? I have a 2005 expedition with approximate 4ft by 4ft of space in the back for a box and want to build a bada$$ enclosure. Any recommendations?