Did this on mine already.
2020 taillights fit without issue... connector is even the same.
2020 grill fits without issue, but there is a gap at the bottom unless you change over to the 2020 upper bumper cover as well.
2020 Headlights physically fit without changing anything else, but supposedly the connectors are wired differently.
2020 Bumpers (from what i've read- meaning i haven't done this myself) bolt in exactly the same, but front bumper has many pieces that must come with it to finish properly.
You can look over my posts for pictures
Hope this helps
I think the taillights fit but aren't the same connector. I saw a website selling the pair for around $1000
www.z1offroad.com
Headlights aren't the same connector either from what that same website said.
I think to swap grills you also need to swap headlights and maybe even the bumper too