Do it. Save that car. Then sell it to me. That would actually be a dream come true for me.

I love Jaguars, but I hate how unreliable they are and the fact that you can't get them with manual transmissions. This would be an unbelievably cool swap.

I've seen old Series II Jag XJs with Chevrolet 350s in them like Okra's talking about. Good move. Seems like a lot of work for a newer car...but hey, I think it'd make a hell of a machine.