Spending my Childrens' inheritance wisely again

[cadders]

Just call me "four Jags" Cadwell. Have finally found a car I have always wanted and loved. It's a 2005 S-Type R variant.
The big brute with a "proper" V8 and supercharger that still whines and doesn't make any strange noises

I know it has a couple of minor faults.
One of the headlights is permanently pointing at the ground and there is a bit of interior trim missing on the passenger side A pillar
Other than that can't find anything seriously wrong with it and definitely think it's going to be a keeper for an old spanner armed with a hammer

So am asking two questions

Dear old V8 owners. What have I missed. What is going to go wrong soon or already has and I've not found it yet?

What's the going black market rate for a spare kidney? 🙂