This is the second one I've installed. The first was on my '05 GX470. This was on my 2023 GX460. Once again, the install went smoothly thanks to some pretty epic engineering of the part(s).
Unlike the 470, which had a (very small) factory transmission cooler directly behind the bumper, the GX460 does not (unless you have the Luxury package). That being said, you'll have to route the hoses through a couple of engine bay openings that are sealed off by some chincy foam pads. I was concerned that the hoses might experience some contact with the metal edges and eventually fail (rupture) as a result, so I used some door edge guard to reduce (and hopefully eliminate) that scenario (see photo).
All in all, another great product by Goliath!