Welcome to the forum
I drive a Y60 (GQ) Turbo Diesel. I really like that vehicle. I have 35" on and have driven 20 000km during my ownership of 1 year. I put a turbo motor in within about 5000 km of my ownership. It has had 35" on the entire Turbo life and has a average fuel consumption of 6km/L. If I drive really badly in town and use the power I get 5.5km/L and openroad at 120km/h about 7km/L. Driving dirt roads at an average of 80km/h I get 8km/L.
I had a 4.5 Petrol Y61 (GU) on 31" tires and once got 6.2km/L rest of the time below 5km/L and it did not have that amount of power or nearly the fuel efficiency.
a Few pros and cons.
the diesel sounds as if there is a 13 socket somewhere in the sump, just how old diesels sound and then the turbo noise and free flow exhaust comes in and you just get a big smile
The diesel has to have an oil change every 5000km and filters (2 of them) every 10 000km
The GU has much better sound insulation so the engine noise would my much less.
I bought my vehicle at 400 000km on the engine and only changed the engine because a complete turbo engine came my way. Nothing wrong with the old motor and would have reached 1 Mil km.
I have broken the 2.7 Hilux a few times and have driven my Patrol much much harder than that.
My father has put 400 000km on his 2.7 Hilux and says the Patol drives much nicer and that was before the turbo motor.