I replaced the 'B' on my 63 C20 292 with a Monojet. It was a pretty straight forward swap on my 292. IIRC you will have to take the pivot point from the 'B' and put it on the Monojet. The Monojet uses a vacuum operated needle in the jet to vary the fuel mixture, you can modify the height of the arm holding it to change the mixture. If Carb king is still around he may have something to say.
Larry
