This page title may be a little misleading. Really, this page is devoted to noting differences between the XJ's sold in the United States, and ones sold in other countries. For example, to the best of my knowledge, the XJ's in Canada are virtually identical to US XJ's, with the exception of daytime running lights and a speedometer calibrated in kilometers rather than miles.
I'm still looking for information on this subject. If you have any information you could provide on this subject, mail me at the address at the bottom of the screen.
As for now, I only have one link of interest: