Just watch the gains when you switch boxes. send a PM to Moe Lester and give him your MAX dimensions of your trunk and see what kind of box he can design you. As far as wiring goes put that thing on the battery and then if you have some headlight dimming then you should upgrade the BIG 3 as well as run 4ga power wire to both amps. Also the sx will not beat the sh!t out of the rl-p...

