Sorry man you can't put any aftermarket wheel on this car unless it's made by Mercedes. Ain't life a *****! Actually you can do it but there is some parts housed behind your wheel which might be exposed by using a MOMO wheel. You could take a junkyard wheel and adpt some of the Mercedes benz parts on to the Momo wheel.
Try searching ebay for a SL500 wheel, or AMG steering wheels. Good luck because they are very pricey. Might be better off putting that money towards more importance upgrades.
http://images.google.com/imgres?imgu...LG:en%26sa%3DX