My new toy... The Shaguar.

[Niall]

Be glad that XJR isn't a V8, the 90's ones have nikasil liners, which means any fuel other than premium eats the engine entirely. And you can't rebore it!
That 4.0 'charge is the same engine as the Aston DB7.

Most were replaced though when the make up of petrol changed so much due to the fact they were failing so early on.