Thank you very much,
Unfortunately the 75 carb setup was different it seems, and this owner replaced it with a Weber to boot.

With his Weber the tube goes from the ERG valve right into the carb body. I have looked at my Stromberg closely and have not found anywhere to connect the hose.

Anyone out there with a stock 74 230.4 that would be willing to take a shot of the engine for me?

thanks,
Daniel