I sent my request in today and received this quick response:

Good afternoon Ryan,

We are working on a new Stealthbox design for the XTerra at this very moment. The design of the original truck hasn't left us a lot of options for locations, so we are trying a couple different locations to see which one will sound the best. I would suggest you contact us in a month or so to see where we are at that time. With any luck we'll have some good news for you then. Also if you have particular suggestions for placement, please send
them our way.

Sincerely,
Don Vertrees