ok.. I wanna keep my spare cause I live in NYC and not having a spare is just crazy.. And I wanna keep some trunk space. I only plan on putting in a 12" Pioneer. single sub setup. ANyone out there have any ideas on design for a box? or should I just spend the money and get that Infinity Basslink self amped 10" sub??. Right now.. I am just using a standard 12" speaker box, but that takes up way 2 much space.. dont even have enough space to put in a case of Mobile1. I saved space already by putting the amps and caps and wire in the back seats and that little "step" that we have from the back seat to the trunk space.. Any help would be greatly thanked. contact me a jasonhko@hotmail.com