Hi all. I'm new. We have a 1966 230SL with a 5 speed (ZF) racing transmission that our family has had for 40 years (second owners, bought in Germany). I'm trying to research value, and realize that the engine may make the car more rare and unusual. I would be grateful for any advice, suggestions or input on how to proceed. It has both tops, all original and a "kinder" back seat.