The problem with mounting amps right to the sub box is that they are now very easy to steal. All some one has to do is un-plug the wires and they have themselves a new set of subs and amps. Now if you bolt or screw your amps to something they are much harder to steal. Unless your sub box is bolted to the truck somewhere I wouldn't recomend attaching amps to a sub box. Just my 2 cents