I'm not sure it will fit. I have a 12" L7 and was going to get a ******** stealth enclosure but on their website they list stealth enclosure for a 12" round sub but only up to 10"s for a square sub. You might want to give steve a hollar and ask him about that... he is the ******** rep on this site.
I'm giving my 12" L7 and kicker amp to my girlfriend to put in the caddy and i'm gettin a new 10" L7 and amp