To be honest, I'm not sure I would go for it. I own a VR Statey, 5 litre. I love it to death, but it is starting to age. I have rarely flogged it, tried to look after it as much as I can, but it's 17 years old now, so wear and tear is taking it's toll.
Your friend may have taken care of it as much as they thought possible, but there are certain things that may have slipped by. things like by now on a VS, the whole exhaust may need replacing, brake rotors, suspension, engine, gearbox & coolant leaks. I know with mine, I would probably have to spend a good couple of grand to get just those problems sorted (engine and gearbox would have to come out)
Not to mention, the VY has heaps of power, and is cheaper to run. I drove my sister's VY V6 once, and it had more power than my VR V8.
My VR is also on gas, it drives reasonably well, but if you need to put your foot down, it lacks the response it would have on petty. Don't get me wrong, it is cheaper on gas, but I also had a friend who went from a VS LPG to a VY petty, and he hardly noticed the difference in running costs, because the technology suddenly took a leap.
Up to you, but me personally, would say no....
