Response curve looks pretty good to me, appears to be an f3 of around 28hz-29hz, should make for a pretty stout low end. How big of a port will you run? Thats a big factor in what will determine the length of the port needed for your desired tune.
How tall? I'm gonna guess and say 11 if the height in the pic is 13.5in. If so, that will give you 22sq in of port area and combined with a 2 cu/ft box I'm getting 23.35 of length from the 12v and 21.93 in winisd.
If you want boomy base, that box should work ok. (many boxes model like that) What sub, what car, type of music, and how much power are you going to use?