Richard: I appreciate your very helpful, detailed information. I should have researched this question before I installed the LYNX 9000 to meet the 2020 mandate. I am a VFR pilot with dual 430-straight units. Now that I need to replace an internal battery on one of the 430 units I thought this might be a good opportunity to upgrade one or both units to WASS. The LYNX is ADSB in and out – all I really need for my VFR flying along with the dual 430’s. I am just looking ahead to a possible future sale of the Tiger. Perhaps I will take a reduced price and let the new owner install his/her choice of avionic upgrades. Jim K.