Holley 1920 Carburetor - Choke Diaphragm Link

I'm looking for a choke diaphragm link (sometimes called a choke operating link) and the associated retainer clip for a 1966 vintage Holley 1920 carburetor. These are parts 49 and 42 in the attached diagram. Apparently these have been missing since I got my Barracuda some years ago, which I just realized recently (and which could explain why the car does not run the way it should!). Thanks.

H1920carb.jpg