I'm not looking closely at the GX 550 since I don't need the towing capability. The GX 550 powertrain will incorporate the latest improvements from the Tundra in-service experience, however I would expect the engines to otherwise be identical.Now you have me thinking! Since I am also considering the 2024 Lexus GX, I am curious, since they use essentially the Tundra drive train, if it also employs the electronic waste gates, and how they would be serviced on this vehicle?