Well this is my first box build for a 15" RD HW v2, it will be going in a 2000 Daweoo Nubira. The box is 4.25^3 tuned to 33hz with 61.625 square inches of port.
Double Baffle+Crappy Jigsaw= Fail
Fiberglass matting and Resin throughout
Overall I think it turned out pretty well and its pretty loud for the small amount of power that I have.