I got two fully loaded 15" BTLs and i need to build a new box, Im running one T20001bd to each sub, In a 2007 Ford Explorer. I want to do subs up port back, and with the port in the middle, like where steves is but top to bottom. I like it tuned low, probably 32 hz and my max dimensions are 45W x 23H and 27D. Its going to be 3/4" MDF and lots and lots of glass on the inside, mostly that 29oz mat from tap plastics. Thanks ahead of time. I also want to recess the subs so an extra 3/4" on the top baffle, while still staying under 23"