Ive got quite a big trunk so id like to use that, dont want to lose the back seats. I wouldnt mind doing a 4th ported into the car.. Im not sure if through the seat hole would work or not, But i know that there is already kind of a hole in the rear deck from the factory, its got a metal grill/cover over it. Im not sure what its for, it wasnt for the factory sub cuz the factory subs in this car were the 6x9's so i dono what its for but i could use it im sure. Although through the seat hole would work MUCH better as i dont think i want the box that tall.
Also im going to want it tuned a little more on the lower side.
If i do a standard slot port box, I wanted to make this one nice. Maybe some 45's in it, or 45 the port around the corner.. Maybe a kerfed port but i dont think ill be able to do that myself..