I gave away the plans to my stealth box that has zero protrusion due to the subwoofer firing into the floor of the spare tire area. There is no need for a grill and a downfiring enclosure will gain you better performance. If somewone could build it out of fiberglass instead of wood it would be the best enclosure for this car hands down in existance. There would be enough room to incorporate either an amp rack or plexiglass window like the way mine is designed. However a flat sub is the only type of sub that will work. I hate to say it but flat subs are the future and they are only going to get bigger and better. Right now, imo, JL is the only company that makes one that is as good as a conventional sub. I will see if I can find the thread and re-post it. It my own design and I am giving it to anyone who wants to replicate it.

FOUND IT!

Here is scale drawing of my subwoofer enclosure with the measurements. As you can see it a bit challenging due to all of the angle cuts but definitly doable if you have some good woodworking tools.

A good car audio shop can build this from the drawing if you want it professionaly. You can also omit the plexiglass window in the enclosure to simplify it. They guy who built mine just did it and he custom painted it inside and added some LED strip lighting to backlight the TW5 which I think looks pretty cool and unique.

It amazes me how deep this flat sub will play in such a small amount of space! I highly recommend the 13TW5 as it delivers wicked tight bass with tons of impact! Make sure you at least deaden the trunk area with sound deadning or it will rattle. Since it fires directly into the floor you feel bass up through the seat and its awesome! I does sound waaay different than a direct radiating sub and you really have to tune it to tame it down. Its a true subwoofer, you cant really hear it or localize it but you sure feel it!

did you ever get the car? I have the bose systema and I want to keep it but if you need a car to just make measurements and build and test fit you can have mine. i really don't drive mine in the winter. I am from new jersey right by cherry hill and I make trips home often so I could leave the car there and it would be no rush for you. i am not looking to get anything out of it and I have no need for a hidden sub box. Just trying to help let me know. Also mine is a 09 touring sport
Frank

Bump for the new year!

im in ny, ive been looking to do something with the stock system, i went from a 11 speaker hardon kardon system to bose, and so far its been a hard transition. If your still lookin for ppl send me a pm i wouldnt mind driving out there to work with you guys.

Has anyone just raised the whole area of the rear a few inches? Just take the carpet out of the back and use it for a template. That would give you room for everything, Even some rear speakers. I wouldnt let the room go to waste, Put some lids in and some pockets. Weight would be a concern.

I am still looking for people.

And yes I know some people have, although my favorite thing is using the two flat surfaces behind the seats and mold in a speaker enclosure for 6.5's. I am currently working on a set for one of my customers.

How much time would you need? I'm about 5 hours away. I could make the trip once or twice.

Looking at one day for ideas and measuring than one or two more trips for final fit and finish.

PM'd you

Do you have any pics of the 6.5's like this in the Z? Thanks.

Working on those now.

Bump for spring

You will find that there is very limited space to work with in the spare tire, Not to mention Base model comes with a different spare then the Sport models. We did hours and hours of R&D when we came up with our Wicked CAS Magic BOX and slim design was the way to do it and achieve good results... Yes you can get an 8" sub in there but why would you waste the time and money. Looking forward to the New JL Audio W3 Slim line of woofers to see if a new design can be achieved.

Good luck, I am certalnly interested in what you come up with.

The problem I see with raising the floor is that the molded plastics go over the floor and you can't really raise them. To do this you would have to create a trunk that went around the plastic at the upper level or at the very least you would have to shave down all the foam that sits under the plastics but then I'd imagine your spare tire would no longer be flush with the trunk floor. I'm sure it is doable but it isn't as easy as it sounds.