Fair enough 12voltKing, i'll cop it. Make that EXACTLY 2 cu ft and tune to 30hz
(I was trying to be general and merely direct him to people who actually know what they are doing over at CAA).
RE Building the box: If you have a bit of time to actually read up, then building a ported box isnt too hard. Considering the budget, i would definitely build it myself. Its all about options. If he doesnt want to or cant then by all means dont. I have the same sub and the difference between ported and sealed is considerable.
Back to the point: Checkerplate would depend on tastes. If you like that look, go for it!! Good luck mate