system, 04 Chevy Silverado?

After being out of car audio for some time, I am putting together a system for an 04 Chevy Silverado single cab.  I would like two twelves or three tens,  however I need a sub that is shallow enough so I dont kill what leg room the truck has.  There is 6-7 inches or room behind the seats (I might be able to squeez a little more).  Subs need to be able to handle at least 300-400w rms each.

Aslo some help on the 2 12s or 3 10s would be good.  I would like the system to go loud (main concern), but I would like to keep some type of SQ.  What suggestions would ya'll as far as quality subs go.  I know the 12s will go slightely deeper, but is it enough to make a difference?

Aslo, what is a quality set of components (6.5") for the front doors?Amps to power the system?

I would like to creat a system that has all the major components (subs, amps, mids/highs) that are manufactured by the same company.(I'm picky)

So far the truck has 70^2ft of sound deadner and a 1/0 power run to the rear.

So your saying that I wont get proper bass response if the box is too shallow? That does suck.

I had a 2000 silverado single cab that had two Pioneer Premier 12" (with the nickle cone) that were powered by a Rockford Fosgate 800a2 and it seemed to get loud and low.  The magnets were very close to the rear wall and I thick I had .68^3 Ft.  I would like to do something like that again.

Anyone else have any suggestions?

That is an incorrect statement.  As long as your subwoofer enclosure has sufficient mounting depth to accommodate the speaker and the correct total interior volume, the dimensions do not matter enough to make any difference.  Look to any shallow mount speaker that will fit into the available space.

Thanks Dyohn for clearing that up.  I was getting worried.  So sounstream is an option.  I have never delt with their equipment, is it good quality stuff?