Removed the steering rack from the front subframe today. Can anyone confirm if these are Sportspack steering bushes:





According to the parts catalogues there is a separate front Antiroll bar bush between standard/sportspack. Does anyone know how to tell which you have?

I measured the front ARB at at approximately 7/8inch, 22.2mm on the central painted section, which I think is standard.
My car appears to have one bush much larger than the other, so clearly someone in the past fitted the wrong type, which makes it slightly more difficult to work out what's what.

 

They are JaguarSport bushes. But they do look as if the rubber is a bit gone. As long as they do not allow movement laterally, they should be fine though. new ones are quite expensive.
As far as ARB bushes are concerned, ordinary OEM ones are fine, as is the standard diameter roll bar. good idea to change the ARB bushes though. They take a good deal of wear.