Carb identification

I think they did yeah, in 77+.

Anyone with any idea on what's missing/wrong with the carb? I know it's difficult to diagnose with just looking at it, and I don't even know if anything IS missing or not.

I did some testing last night. With the car off, it's the plate is closed. As soon as I fire it up, it's open way too much. It idles way too high.