fitting the same mounting tray
This NOT necessarily the same as slide-in slide out. It may fit the same tray, but the electrical connector at the rear may be different. You really need to look at the install instructions for both and the pin out diagrams.
Our ADS-B installation had about $2,500 of EO's. In the US, The FAA has waived some of its requirements to try and make ADS=-B fitment cheaper - but not our CASA.