^^ i think he's just trying to gain some knowledge.
typically, for trunks, loudest is to face it forward from the back seats and seal it off from the trunk. in an SUV, subs up/port back is loudest the majority of the time. if you're doing a wall, port on the drivers side is louder on the termlab, port up top is better for daily listening.
but like everything else with car audio, test...test...and when you think you're done testing, test some more to see what works best for your specific setup