I have a 2017 SR5 with the premium navigation w/o JBL audio. I was curious to know if anyone has upgraded their head unit to the one in the 2019 4runner to get the latest eTune features or if there is an aftermarket model that provides the same if not better features including the car maintenance statistics. I would not like to lose the ability of my voice and handsfree options on the steering wheel either. Thanks.