help design box?

[tmac93]

i found 2 of my old hifonics brz15d4's in storage. im interested in building a box for them in my charger. my max dimensions i can go is 32'' wide,15" high, and 27'' depth. i really want to experiment and show some friends that even with cheaper subs u can still get loud. so i figured id get on here and see if anyone could help me out and give me some box plans. i want a box thats gunna make these subs pierce ur ears and move some air. they only handle 600rms a piece, so ill be pushing them to the max with brutus 2100.

any ideas? 4th order?

Any help is greatly appreciated. thanks guys