i very nearly let a local reseller put me into a white 1978 Jaguar XJS. It was correct and immaculate, other than being left hand steer for the US market.
But as a recovering restorer of a couple British Leyland sports cars, (let me know and I'll send you a link) I don't need that kind of pain. Besides, given how freaking huge it is, it's bloody tiny inside. Honestly, the P1800, at half its exterior dimensions, has more cabin room.