Need a Box ASAP

[gtasound]

Just removed my peice of shit custom box for 3 12s that was rear facing and rear ported.

I want to fire into the cabin and only do 2 12s, sealed off from trunk.

I hear that the port on the driver side will yeild highest SPL from others on here.

I have these dimensions to work with in a Lincoln LS:

H x W x L

14 x 30 x up to 42

or

12 x 42 x up to 42

I tried using the Torres Calculator with no luck.

Here is the specs the subwoofer manual gives: Powerbass 3XL 12"

Gross Vb = 2 cu.ft

Cicular port = 5" x 14.4"

Fb (box Tuning) = 36Hz

F3 (-3b cutoff) = 33Hz

I was hoping for a box like this one:

[gtasound]

Please!