I need an Opel workshop or user manual

Hello to all the users, I write to you from my Uruguay country, my request was if someone has the workshop or user manual of the Opel Rekord Caravan 2.3 diesel (GM motor) of the year 1981. or the manual that they have the same if it is from the Berlina serves me. It is a half -grandmother machine but it is well preserved and the truth I love. They commit themselves under the name of Chevrolet and it is difficult to get this kind of thing. Thank you all. Salu2