I have a 2012 GX260 and have done a few mods with lots more planned. So far a Dobinson suspension upgrade, with TRD 17"s and 33" KO2s, Rhino Rack, 3rd row seat delete, DIY slide out kitchen and fridge, rock sliders, and a couple of recovery points.
More to come as I look at armor and winch options and try to decide to get a tire swing out or full rear bumper.
I have driven it across country, through Moab and Death Vally, 34 states in all.
Let me know if you have any mod questions and I would recommend Death Valley. I have a few routes I can share if you use a map app.