If your doing the arch, check your depth we replaced stock speakers with. JL M7.7's on my buddy's 320 and had to make extension rings so the magnets don't hit the inside of the arch. I just did all JL MX speakers and MXSub 3 JL amps and Fusion head with 2 remotes believe me there is nothing (tinny) about JL's. Everyone that hears it loves the sound and clarity . Good luck