If you would like to get a design or custom box started, message me here! 
lease include the following information:

1. Are you looking for just a design, or a complete box to made?
2. The max dimensions you have where a box would fit. (Width, Depth, and Height)
3. The number and model of the subwoofer(s) you are using.
4. What vehicle this box will be going in.
 
To help make the design as custom to you as possible, you can provide other information such as:
5. Tuning frequency preference.
6. The type of music you play the most.
7. If you want the subs and port to face certain directions.
8. Any other information you feel you want to add.