This is for a custom designed, 3d printed, 6.5" subwoofer box kit.  The box fits in the passenger footwell, and is the only box on the market that takes up no cabin space.  This kit is meant to work well with OEM door speakers to help give a more complete, all around better sound quality, without being overbearing. Kit includes the following,

- 3d Printed Box, and amp rack

- 1 6.5" b2 audio Subwoofer

- 1 600w b2 Audio amp

- Wiring kit with Premeasured Power, Ground, RCAs, Remote, and Speaker Wire

Will require aftermarket head unit to install, and those are sold separately.  If you would like a recommendation, feel free to reach out.