nissan single cab p/u

i don't have much room as you already might know. i might can push the seat up a notch, from all the way back, in order to still be comfortable.

so which would of the two do you think would be a better fit and sound???

-- i was either thinking 2 10" tubes with an amp to be decided(if a 10" will fit comfortably behind seat without having to push seat to far up)
--or 1-2 shallow mount 10"-12" dvc's


so, with your opinion, give me some insight if you will and you can also name some subs/amps, that are pretty decent for the money, that require less room but will still pack a punch.

thanks a lot