Help with Box Design and Build for 15 BTL N2

[johnny hitswell]

going into a dodge magnum i got about 39 of length not sure on the width or height but looking for a design and build for daily music use that can get loud, will be using a crescendo bc3500

[DbDesigns]

I can do a design up for $25

[mazdakid]

Find a known designer that knows what theyre doing and doesnt charge $25.