Hey John, try calling Norb from Northshore Import Sportscars classic automobile dealer in Lake Bluff, Illinois. They are racing a S1 with the Fuego gear box and have worn out and rebuilt a few over the years. He may have an idea where to find a seal kit. Unfortunately when Renault pulled out of the US, the parts supplies went away too. Your other option is to try parts vendors in Canada where Renault spares are still fairly common, or if that doesn't work, you may have to try England or France, but getting anything out of France is usually a major hassle. Good luck!