Hello, has anyone upgraded their system in the 15-17 Navigators. I’ve been trying to find speaker sizes and other builds but not having much luck. The THX system is pretty decent to start. I’m looking to get the JL Stealthbox and probably a Mosconi 8to12 Aerospace. I’m a Focal guy so definitely a possibility. I have an extra KRX3 kit plus other 6.5s and 5 1/4s