I'm on the process of getting a stock sub box. While the stock box may not be as stout as a custom box, it should be good enough for me. If I lived up near you.. I would have had you do one for me. With a little modification I think I can put in 2 JL 6W0 and if not I will select a 8" unit. I didn't have the box yet so I'm not sure of the internal volume. I'll measure it once I get it and then figure out which way to go with woofers. Any advice is welcome.