I have the 1905 AVS2 manual choke and I faked the factory choke system for the “correct” look.
I tapped the holes on the AV2 2 carb body where the pull-off would mount and installed an NOS pull off in the factory location. I also ran a dummy vacuum hose from the pull off to the plug in the base where a nipple would be. I also have the factory choke well installed. I drilled a hole in the manual choke bracket and attached the choke well arm to that.
To the casual viewer it looks like a factory choke setup.