Hi all, I'm pretty new here- can anyone tell me if any years/models of X350/8 were available with a Limited Slip Differential?

Or is there an aftermarket solution?

Thanks!
Tim

There is in the UK Paramount Performance Ltd - Jaguar XJ8 and XJR Ltd Slip Differential

Echoing what Cambo said, In the October 2011 issue of Jaguar World magazine, there is an article about Paramount Performance installing a Quaife Automatic Torque Biasing helical unit in a 2002 S-Type R. I know that's not exactly what you're asking, but the article also says "...Tom had fitted this unit into an XKR's original diff housing before (see JWM July 2009 for a full test)."

I personally don't know the interchangeability among models, but I thought this might be useful info for you.

-Jim