I have for sale my custom fiberglass subwoofer sealed subwoofer enclosure made for the right side of the G8's trunk. The original build thread can be seen here: http://www.g8board.com/forums/9-ster...enclosure.html
Unfortunately during the photo bucket cluster f*#$, most of the links no longer work but can but I have included them for your reference here. It was bolted to the side of the inner fender using a nut-sert and I never had any issues with it coming loose. I absolutely loved this setup but its time for it to find a new home. I also have the infinity kappa 100.9W subwoofer for sale as well if you're interested. Looking to get $300 for the enclosure only and $400 for the whole package. This is more than fair given the shipping cost and time I have invested. Please let me know if you have any questions. Located in Chicago as local pickup is preferred.