this is what i came up with for you i checked a few times and everything seems to be right if anyone notices something wrong please let me know. i seem to miss things sometimes
your box if its in a truck port up sub forward if in a car lay the box down sub up port forward on drivers side
these are the dimensions
20Hx26Wx10D
port: Tuned at 32 HZ
8.5H x 1.75W x 18L
P.S Ram i used your idea with the 3d letters in front of the box design dont kills me