Sorry I could not give you beter info on the car. From what I can tell from a parts book found in the car the engine is a m110. There is no name plate trunk. The car is a 71 with 6 cylinders and one carb. The plugs sit down in a well and are a PIA to get out. This all new to me since the last gas Benz I owned was a 190 Sl that I purchased for $200. I will do a search on Zenith carbs. Thanks again and any help is appreciated.