I heard back from J&L and they haven't done an installation on a GX550 yet. I watched the Tundra install video and it is pretty straight forward. Will get one and put it on our GX when we get it.
I run the same setup on a twin turbo system on my Explorer ST and it catches a lot of oil that would end up messing with the intake. I usually get about 1 oz of oil for every 2k miles. I really don't worry about the warranty as it is des not stop the blowby pressure from getting into the intake...
I am going to install an oil seperator first. I have contacted J&L to see if this Tundra seperator will fit on
https://www.jlosc.com/j-l-oil-separator-3-0-driver-side-2022-2024-toyota-tundra-3-5l/#product-reviews
I have one for our Explorer ST with dual filters and it works great. Unfortunately it off the list as I promised my wife that the GX was hands off because of all the modification I did on her Explorer. I might be able to sneak this in as she will never see it...lol