well, i'm putting in a sub floor, if i get the 2 15's. But I want something that's loud as hell, and my car's got 142 horse, it's not like it's very fast. If anything the extra weight would make me go slower so that i didn't get in trouble as much...But i want it **** loud! I think i'm gonna go with the 2 15's if they put out more than the juggy, and besides...wouldn't they give me better SQ??