Any good rims and body kits for this car? It has 17" AMG rims, but I want another look for the summer too, maybe something chrome, not too crazy, but nice.

well i dont think that you'll be able to find too many body kits but there are lip kits and as far as the rims alot of rims fit it just make sure you get some that you really like or go bigger maybe 20" good luck bro

I'm sure you can find your ideal rim at http://www.thewheelconnection.com/php/wheels.php
but for the bodykit you can try
http://www.streetbeatcustoms.com/edd-mercedes-benz-c-class-w203.html
or this one
http://www.bursethracing.com/products/sfID1/233/sfID2/234/sfID3/29
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why don't you try Geiger? or kleeman?

Check CKSperformance.co.uk ... I know they have some stuff. Of course it is in the UK, so all of the prices are in Pounds without VAT (European equivalent of tax)