Did Edelbrock ever make a LD340 with a choke well?
You could also go looking for an aftermarket TQ, those had an integrated choke similar to an AFB.
I am running a TQ on an MP dual plane Magnum intake and built a bracket to support the choke housing so I could run an OEM TQ that matched the car.
The trick is finding the choke cover. I ended up buying a complete other TQ just to get the cover.
You could also try and figure out how to put an AFB choke on a TQ.
Just some ideas. Sorry I don't have better ones.