Welcome to the Forum!!!
There are not many aftermarket parts for our cars. Exterior after market parts there are a few and are expensive. Performance aftermarket parts are almost non existent, and the ones that do exist are expensive.
http://www.ctd-germany.com/
http://www.vmaxx.de/en/public/?fz=30
http://www.startech.de/homee.htm
http://www.kleemann.dk/site