Thanks for that info - I will be getting a 2020 here in the next couple of weeks and had planned originally on getting this, then heard the Radar box is an issue, and was going to wait. Now will likely just black out the Toyota emblem and get black valances and call it a day.
Just got my 2020 4Runner and reached out to CarTrim about the fit. They did reply stating they were unsure about the fit as they were designed for 2014-2019. They also mentioned the radar box, but I am unsure why that comes into play as that is on the lower grill. I also reached out to Mad Hornet who responded the same. So for now it appears painting, vinyl or plasti dip are the options for the 2020's.