Box outer dimensions (.75 mdf) - 40" x 13.75" x 8.5" = 1.91 cubes

After subs, ports and bracing = 1.65 cubes

Box will house four E8's firing up. I have 10' of 2" pvc so I'd like to use it since it's free. Will two 2" ports 8.56" long tuned to 34hz give me good output? Also I have a choice of firing the ports down or to either the driver or passenger side, do not have room to fire up with subs. Give me your thoughts please on this design.

Power comes from a Sundown SAE-1200D = 1200 watts @ 1 ohm @ 12.8 volts.

Box will be behind the seats, raised off the floor, in a small MR2 with about 30 - 35 cubic feet of interior volume.

2 2" ports is only 6.2sq.in of port area, or 3.8sq.in per cubic foot.. you might get alot of port noise! ideally, about 15sq.in of port per cubic foot net volume works best..

also, 2" ports are too small imo, there might be too much friction between the air & port walls.. too much friction = shifts in tuning freq..