Sorry, Aaron, I'm not trying to offend. I just don't think it it's current configuration you'll see too many Range Rovers on the road much past 15 or 20 years. With questionable engine management and electronic controls in general, a tendency toward rusting and so much plastic, these things weren't meant to last forever. I'm not saying that with enough time on your hands, cash and enthusiasm that they couldn't, I'm just saying that most people won't bother. And in your case this is a good thing. Decent Range Rovers can be had for a couple grand and parts trucks for cheap are becoming more and more abundant. If you have a nice rust-free truck and the money and know-how to keep it going, that's great.
At 100k miles and 14 years mine had become rusty enough and unreliable enough that it just wasn't worth it for me to keep. Its too bad too...It was a great truck when it was running and I had a lot of fun with it.
The Disco 1 is heading this direction at even a faster pace and a good running example can be had for $3500 all day long.
jim