Hello all!
I understand the fact that you wish to acquire a XJ-12 with a Vette engineà I do not want to sound negative, but it shouldnÆt be called a Jag anymore. Conversions are somewhat popular and they do nothing for the car, except kill its soul. Get yourself a real XJ-12 in decent condition, rework it, and make a jewel out of it, you will be so proud after the exercise. But mostly you will have a real Jag with a real value and will call admiration by connoisseurs.
Good luck
Jack