Is this a NG900? If so then I'd start with your dealer. The bits from a 9-3 can be made to fit with minimal adaptation, and you do occasionally find them going cheap.
Well there aren't very many bodikits to choose from..As James said you can try Saab first, the Viggen/Aero kit can be fitted on your car with some minor mods..
Then there are two swedish companies that makes bodykits for the ng900/9-3..
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