The upper ball joints on my S2 appear new, a lot of work was done just before it went into storage.
But the boots have rotted away over time.
Somewhere I saw a suggestion to use Energy Suspension 9.13105G Tie-Rod end boots.
They are certainly cheap enough and probably much more durable than rubber.
But I have to rate them as a Fail.
They have no return lip or spring wire to hold them in place at the wide end.
Under articulation the wide end will not stay in place to form a waterproof seal.
Now thinking I will just buy new BJ's.
So what brand is best quality now?
A part number and source would be even better.
Small simple part so hoping not to have to order from the UK.
