CR and CY detailed technical data

I am Japanese and live in Japan. I imported golf mk 1 GTD from Germany last year. I am currently registering in Japan. In Japan, CR type has a record of official imports, but there is no information on CY remaining. Does anyone have detailed technical data or manuals on CY (GTD)? I absolutely need it for the procedure.

Please provide a document (copy OK) showing the comparison table of CR type and CY type technical.