I researched into compatible units for the New Garmin network working in the lower helm, to fit onto the Flybridge. Selected products, found were, Garmin:
GPSMap 527 chartplotter
GMI 20 Display
GNT 10 (network application for Quatix Watch)
VHF Radio 200i (With intercom for lower helm)
A few other bits and. Lbs not mentions but found all the essentials to get TandEadapts, flybridge flying. Thanks to shop owners and advise lines like Hudson Marina for their help sorting through hundreds options. Fitting is planned for later in Spring.