jbl bpx1100?
you can pry get a spec sheet from cerwin if you don't have one; smaller/sealed is what i recall for my 12" stroker - however (just sold yesterday) i asked them for box specifications for the ideal box when size was not a constraint, and they faxed me a box design that was a good 3.5 feet tall and had 2 4" wide 2 ft long ports!!