TQ questions

I’d use the 9080. The front of it has the altitude compensator.
You can simply plug that and the purge port and leave open the top vent port.
The electric choke model has a bunch of emissions vacuum ports to plug up which I don’t like much at all.
The first two are emissions carbs. The pig tail at the rear is for emissions. To many vacuum ports to plug.

The more you have to plug up the more you have to work around how the carb was set up to run. They all can be made to work but how well they work is another story.