Ive got a box that I've barely even had, probally a little over a month. Its 3 cubes tuned to 35Hz with 46 sq. inches of port. It has a flared port, 45s in each corner, and is capeted with charcoal carpet. Had it in my truck and its in 8/10 condition. There is a small spot where the carpet got tore when I was putting it in my truck, and of course screw holes from mounting.
Here is the build log with pics and the dimensions:
