This is a really tight fit. I mean there was a rubber mallet used to pusuade it to get in place tight fit, but it does fit with no damage to the enclosure or the vehicle. The factory subwoofer and brackerts were removed as well as the plastic trim piece on the right side. This is the enclosure I used. https://www.amazon.com/dp/B00U1I4NR2?tag=globalgrena0b-20 For $36 it was worth trying, even if I destroyed it during installation. Put a little polyfil in it and dropped in a shallow Focal Sub that only needs .35 of space. This thing has a little more before cheating with the polyfil. I did trim the plastic a little on the top so it was easier to install the subwoofer, but a utility knofe is all that is needed. I could have done it a little neater or put some trim over that, but it is under the seat and out of sight. Sounds good enough for me and hits the low notes that make any track sound fuller. It also helps to cover the power steering pump whine at low volume levels 4 or 5. My preference would have been one quality 12" subwoofer, but there isn't enough space under the seat without major customization with fiberglass or something. I now have better sound and nothing in the storage area behind the seats, which was a requirement for me for this vehicle. There is also no visible sign of this subwoofer with the plastic trim covering the bottom of the seat reinstalled. There is enough clearance under the steel seat bar to remove the subwoofer. I originally had it with no poly fil and did not want to uninstall it again. Luckily I was able to slip it out to put in the polyfil and quickly reattach it with the 8 screws.
