Carlos,
You might try this company. I don't know if they will ship to Europe or not. But I think that they may still have a correct part. eMail
Alan@DuntovMotors.com
Part S030 69-82 flexible coupling
Duntov Motor Company, Farmers Branch, Texas U.S.A.
Or you might try:
Corvette Steering Service
CorVette Steering Service Inc Tom Reina President
PHONE (864) 287-9990
E-MAIL
steering10@hotmail.com
Alternate :
mail@corvettesteering.com
Address for Shipping or mail:
CV Steering
2215 Mullinax Drive
Anderson SC 29625-6145