Blue Prints Swingset I Want To Find Usable Blue Prints On How To Build Speakr Boxs For A Vehicle?

I want to find usable blue prints on how to build speakr boxs for a vehicle? - blue prints swingset

I have 2 12 inch, 2-speaker 10-inch 2 a.m. to 8 p.m. Customs plays for my truck. I would like an efficient little box for the back of my jacket design. I heard about your subs facing each other in turn to speak, but they should know how far to find it for you or develop plans and new boxes to be.