Looks like a nice clean base to start with mate. My best mate has a 4.2 TD Patrol and his old man has a white 2.8 GU like yours. Last year they did a trip through the canning stock route, one of the most remote tracks in australia. The 2.8 GU had nearly 300,000 clicks on it before they left and it did the trip without missing a beat and did everything the 4.2 did.
I have driven both and you can most definitely notice the power difference, but that being said, with a few bolt on mods the 2.8 really livens up.
Can't wait to keep an eye on this mate.
thats awesome to hear as i am doing simpson desert next year (if i dont upgrade before then)