I recently upgraded from 2013 2.5SL Bose/leather fullyloaded to 2018 2.5SL Bose / Leather. But there is no navigation system. I want to upgrade that to Navigation system so I can use the Android Auto, Navigation etc. In Ebay I found various 25919-9HU0A ($350), 259159HU0C etc. But they are also from 2015's an 2016's sold at approx $200. Did anyone have experience in upgrading or help with choosing the right and least expensive one.