Jan, thanks for giving another brand to look for when it comes to cable throttle bodies. Ebay isn’t helpful unless you look for specifics. The former EGR port is pretty small though so I may save that for a different build.
I am actually pretty interested in the older style of gas mixers showed in Gengas. Particularly the one on the left shown in this picture. It’s interesting that they only show a butterfly for the gas line and not an air damper. Would this have been a sized to the engine sort of setup I wonder? Surely an air damper is placed upstream before this junction. I like the idea of the woodgas valve itself is the fuel throttle. When you have it shut off then there’s no need for a second cutoff valve.
Or I could attempt something like this.
