I have a 2013 f150 suoercrew and going to buy the foxacoustocs single ten box. This box is ported tuned to 35hz, 1.25 cubic feet, and has a max depth of 6.75. Trying to decide between an SA10 or an SD2 10 from sundown. Is 6.75enough depth for the SA10? I've searched for over an hour and...