4 12s in a Tiburon

[Bdurb]

Alright so here is the spec sheet for the apline type r 12

http://support.alpine-usa.com/products/documents/OM_SWR_S06212011.pdf

i did some specs for tuning at 37hz

here is what i found.

minimum length of a side for a square port is 12.73 inches

the port would be about 30 inches deep.

need about 8 cubic feet for all 4?

subs up port back or forwards for a tiburon? i would consider it a hatch, please advise.

i need feedback asap.

is 37hz a good hz for these subs?