i can tell you from experience that those subs can be loud.......i had 2 of them in 07 and hit a 141.6db with MECA on some crap Kenwood amps......get a better box and you will be happy.
Okay, I got some cut measurements and box plans from someone and now I'm ready to move on up into building my own box. I've also ordered some knu 1/0g wiring and looking into an alternator upgrade and big 3 upgrade. The lights dim badly so I'll need to see what size alt I need. Thank god payday is coming up.