Has anyone upgraded the factory sub in a Tacoma double cab (post 2005 body style)? I know there's a company that makes an enclosure called Taco Tunes or something like that that fits behind the rear seat... does anyone have any experience with these?

Will it sound any better than the factory sub behind the rear seat? The factory sub distorts terribly on certain frequencies at higher volume. There's no room behind the seats for any other prefab enclosure. I don't need a ton of bass, I just want it to sound clean.