I am thinking about building the thunder 12.3 in a little while. I want to design up a box for it right now while I still have some free time. I am thinking of putting the PR's on adjacent corners and having the av12 downfiring. I will probably be using the 500W parts express plate amp to power it. My question is does anyone know the dimensions of the 15" PR's from Stryke. I can't seem to find them on their website. I basically want to know the cut out diameter and the depth so I can figure out how to make some braces. The box will be 18.5" cubed which gives 3.66 cubic feet, so that should be enough extra to compensate for the drivers, amp and braces. If anybody else has built the thunder, how does it sound?