Hi, if interested, I have listed them on ebay. I was doing a euro conversion, but never got to eliminate the ugly boxes that came with the 560sl bumper.
Mercedes Benz 107 European Cat Eye Turn Signal Lamps and Grill 350SL 450SL 560SL | eBay
Mercedes Benz 107 European Cat Eye Turn Signal Lamps and Grill 350SL 450SL 560SL | eBay