Originally posted by Dan Nixon:
Y-pipe will not work as the X engine is longitudinal not transverse. Manifolds, possible but unlikely without modification. worth looking at though.
Dan, I beleive you are mixing up the x-type and the S-type, the s-type is a north/south drivetrain, and X-type is East/west
As to the fit of the Jaguar parts. It is very possible some of the parts will fit, but they are currently extremely rare or not even available just yet, so it may be a little while before someone can confirm whether or not they will fit as a bolt-on affair.