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Message: [QUOTE="jdc753, post: 499803, member: 52"] In that space behind the seat I would leave it sealed, its just gonna get REALLY complicated to port it right in such a tight spot. Plus honestly for me, I have learned enough to know that properly designing a ported box is above my realm. At least I have never had the chance to experiment with them yet, so I generally stick with sealed, they are much more forgiving and easier to not screw up. Honestly the only place I have seen people successfully make ported boxes in these trucks are from [url]www.spl2k.com[/url] other than that its 1-offs from shops like what Garret has with his 8's CVT's generally like a large box, it is kinda contradictary for a shallow mount sub to want as much air space as a conventional sub but sadly its how they work. The single CVT 12 should work good in something around 1-1.5ft^3. For example the Pioneer shallow 12 will work in as small as 0.3ft^3 but more realistically 0.5ft^3 For porting the CVT 12" kicker calls for 1.75-2.25ft^3 and a little more digging into their manual probably says what they like to be tuned at, but tuning is a WHOLE nother book. So say you build a box to 1.75ft^3 internal volume (which is the minimum) you will then need to tack on volume or allocate room behind the seat for the porting system. I would then recommend an aero port since it takes up less volume and needs less port area compared to an equivalently tuned rectangle port. For porting in a daily setup generally you will want to tune low, around 32hz, but the final tuning (effectiveness on your ear) will vary based on where the port is fired, how the subwoofer reacts to the tuning, and the cabin space of the vehicle the box is placed in. I like to think of a good ported box like the difference between an Innovative Diesel built 6leaker vs a bully dog tuned 6leaker, generic applications won't be as effective as something with solid R&D time behind it. [/QUOTE]