Have you tried a company that does body kits for other cars, they might do all the legwork for you and find one to import with other kits they're importing.
i'm sure you'll pay more than $500 to import a kit from poland, its a pretty big thing to be shipping.
there's a guy in perth who said he could do a full, one-off fiberglass kit for me for around $1800 iirc if i just gave him pictures of what i want, for my HR31 though.
Hybrid Customs, they hav a website.