Based on research I've done on 4Runner, it is my understanding that 7" screen is maximum what fits in 2 DIN slot. I'm not sure what is behind 8" screens - some new standard or non standard slot?Also after looking at Crutchfield, I've only seen 7" units with Carplay and Auto, so also not thrilled with that. Plus a lot of them don't have volume knobs, just the buttons. I guess I'm being super picky.