I have a mid sixties Chevrolet in the UK and wondered whether anyone had identified any parts on European Vauxhalls/Opels that are the same as on American Chevrolets.
No in the 60's GM America, Vauxhall UK and Opel Germany were run as independent companies there was even very little cross over between the UK and German arms of the company as Opel was competing against Vauxhall for a slice of the UK market.