Good question Paul; I'm only assuming they did because my other car has them. Mind you, I know they are aftermarket inserts, so maybe they came with them. Thanks for the photo too; is part 3025 supposed to be the bump stop that Marty referred to? I may end up raiding car number one for the boots to fit to car number two. Both cars have 2 litre struts, so although the swap may be painful to do, at least I know they will fit.
Next problem - getting the old inserts out - one is different to the other, they have different means of screwing them in, and I have the right tool to undo neither! Any suggestions for getting the buggers out?