Wanted rear wheel housing plastic liner

[veneto rs2]

Hi everyone.
I'm after the left side inner plastic of my rear wheel arch the part it's no longer available from Audi.....

Part # 8A0810171B

The part its' the same for every 80 B4 Avant quattro

Thanks!

Stefano

P.S.
By the way....Anyone knows if the fwd part will fit or could be modified to fit or not?