Thanks to everyone for your comments and help.
My engine is from a 1991 Legacy. Finding , especially the older Subuarus, in breakage yards is no so easy here in Austria. That's the reason i wanted the exact OEM parts numbers. Thanks member "nvu" !!
What was the latest Subaru in production with the EJ22 engine and imported here to Europe, Legacy 99, Impreza 97 ??? it will be easier to find a late model that's being broken for parts.
I can get a new replacement R134 compressor for around 200 euros..... If it fits the alternator bracket i have. Then I need the lower bracket and the belt tensioner components, probably from a yard
john