Hi - original owner of an '08 MDX, (with lifetime Sirrus Radio subscription) looking to see if any of you have any guidance on having a car audio shop 1) Replace Bluetooth with a current Bluetooth (v4+) tech 2) Replace Speedometer Instrument Gauge Cluster with a digital version 3) Replace rear camera to have guidelines 4) Replace DVD Player to include DVD/USB to support ISO/MP4 as well as ol' fashion DVDs. Optionally add a real remote starter (OEM version sucks) add front and rear facing recording cameras (like a dash cam, but always on/recording/over-writing after 4 hours as an example). Don't want to replace the XM radio given the lifetime license that was bought in 2008.

Open on what questions to ask the installer, which vendors make quality electronics, how to check to see if a quality job was done.

Thanks!
J&M