Sorry for the bump but has anyone got any further update?
Only bb6 balljoints I can find don't look like OEM items
https://m.ebay.co.uk/itm/HONDA-PRELUDE-BB6-BB8-BB9-11997-2001-FRONT-LOWER-SUSPENSION-ARM-BALL-JOINT-43MM/320777673361?fits=Car+Make%3AHonda%7CModel%3APrelude&hash=item4aafd6da91:m:mRfewjLwkNgTzumHLveZySw
Only bb6 balljoints I can find don't look like OEM items
https://m.ebay.co.uk/itm/HONDA-PRELUDE-BB6-BB8-BB9-11997-2001-FRONT-LOWER-SUSPENSION-ARM-BALL-JOINT-43MM/320777673361?fits=Car+Make%3AHonda%7CModel%3APrelude&hash=item4aafd6da91:m:mRfewjLwkNgTzumHLveZySw