I have a 2008 G37S Coupe with nav and bluetooth (for calls only). I am currently in the process of upgrading my entire sound system, this includes new JL 4 channel amp for the bose speakers, a new nav screen with bluetooth music so i don’t have to use an FM radio transmitter anymore, and most exciting i have 2 12” Jl W6v3 subs powered by a 1500 rockford amp. My problem is with the nav screen. I cannot install it without losing A/C functionality. The metra dash install unit is terrible and ill lose a/c still. I’ve heard of this mythical JDM double din install kit with A/C still working but I cannot find it anywhere. Any suggestions?