Help with new box. L7 15

[N1GHT]

So, I just purchased a new car and the trunk on this thing is TINY. Naturally, my box is too big and I need to build a new one. I have no clue on how to build boxes and how to get the appropriate dimensions to get the required cubic ft or tuning.

If someone would be nice enough to, possibly, make a box diagram?

I have a Kicker L7 15in. Im looking for a ported box (sub up, port driver side) tuned between 32-34hz within these dimensions: L:30in W:33in H:15in.

Any help or suggestions would be appreciated! Thanks.