So far, I've finished the box for my HDC318 and got 2/0 welding cable for the big 3. I didn't take too many pictures while I was building the box but I did take some.
Box is 6 cu ft after displacement tuned to 34 with 92 sq inches of port.
Left back and right side together.
45's put in.
Sub in, and box put in truck.
More to come