Nice enough thing, but the same spec car undamaged and without a Cat D marker against it, would only be worth £5,000 in the current Market place!
If you are seriously interested, I would make an offer of £3,000 and see what sort of reaction you get, but wouldn't pay over £3,150 for it!
You have to bear in mind that to most people it's just a thirsty old Jag that's nearly 10 years old!