I'm after front and rear arches, gt inlet manifold and a gear box g40 or gt
If you're really stuck, worth a try.....
http://www.ebay.de/itm/Polo-86c-2F-3F-Gt-Verbreiterungen-Schweller-Radlaufe-G40-/301163905936?pt=DE_Autoteile&hash=item461ec48390
Is that German version of eBay?
Yup. Loads of G40's/polos in Germany. Sometimes parts come up on their ebay. Worth keeping an eye.