1977 Porsche 911S 911 S 2.7 CIS System, Not Complete, Good Air Box, Throttle Body

I'm calling this 77 from some casting dates. This air box has the tubes in it for the cold start, I think that was an update, No blow hole. I don't think all the tubes are from this but close to a set. No Fuel head or WUR, Sorry

Thanks for looking