Mine is a 69 W115 200 petrol. Presently, it has a single carb. I've seen W110 200 petrols with a neat looking twin carburettor set-up and am seriously considering looking for a junked W110, removing the carbs, and putting it on my W115. Question: will I gain performance? Fuel consumption will suffer? Do I need to upgrade my fuel pump? Linkages? What should I expect and or worry about? Thanks in advance.