FI bl 18's box design question

[07_ZX10 4]

I used to get Chris @fishercustoms to do my box designs but their forum is not active much and Im not sure if he still does them. Who else does designs, need for 2 FI BL 18's in a wall in a 2012 scion xb

[ssh 924]

Audibel Customs may be able to help you out.