Converting Carter AVS to electric choke

I'm not an expert, but it appears that an original AFB cannot be converted, at least with the choke pull-off still in place. I think the new choke housing mounts in three places, using the two unused "bosses" and the vacuum port area. Here is a picture of my '68 BB, 4-sp, AFB. Seems similar to yours, with same clearance issues. Maybe someone can confirm or deny this.