A company that specializes in making retro-looking hot rods from modern Mercedes, Gullwing America, has revelead their latest project, the GWA 300 SLC. It starts out life as a brand new SLS Roadster AMG and is converted in the aim to look like a 1955 Mercedes 300 SC W188. They have only made one so far for an Eastern European customer and it features fully handmade aluminium body and some custom wheels. Everything else is stock SLS. Plenty structural work was needed to fit the body, wheels and headlights fit. Want this done to your SLS? Then expect a serious bill, something in the region of $500 000…