I want to do a custom box, but don't want to pay custom prices. I have 2 12" subs and I hate the fact that the box sticks out so far. I would rather have the box be wider and taller with less depth to completely fit into the space in the back of the trunk and allow a bit more trunk space. I imagine someone has done this. I just want to know how tough it is to make your own quality box that doesn't have issues with leakage and stuff like that. Seems like a few power tools, some wood glue and screws would do the trick. How about joining the box? Any special techniques for joining the corners and preventing leakage?