How much room should the sub and the port be from the back of the cab?
I have a 2005 Xterra, and with this huge box I had built for my Eclipse Ti, there is only about 6-8 inches of space from the subwoofer and port, to the back tailgate, is that sufficient?
you should be fine.. my ti probably on pops out about 3-4 inches at the most and thats an exaggerated estimate at full volume. you should be in the clear