I just ordered a JL 13.5 W7 Subwoofer

- Rockford Fosgate Amp Type RF X6.A

- 2ga Monster Wiring

- Tsunami 1.2 Farad Capacitior

I will have the box custom made to leave enough room that the hole in the trunk will be visiable . I wil have the Amp and Cap installed in the hole with a Plexi-Glass cover to show the set-up but still be able to use the trunk space..

hmm can you fit a 13.5 sub in? how are you facing it? JL... good choice. you're a winner in my books

jl w7 13.5 ....jeeeez that shit must be heavy as hell!!!

Your gonna need a bigger cap get one of these. http://www.alumapro.com/
a 5 farad atleast. It's called The CAP. :D

ummm.....you're trunk IS the box for that sub....just FYI....that's going to need some huge demensions....