cletis , would this be of any help to you..
#1406, 600 cfm, square-flange, electric choke (non-EGR)
CALIBRATED FOR FUEL ECONOMY
Designed for small-block and small displacement big-block engines, these carbs are recommended only for stock to Performer level applications. Match with an Edelbrock Performer or Performer EPS manifold and other brands of similar design. Calibrated 2% leaner than #1405. Includes both timed and full vacuum ports for ignition advance. Comes with: Metering Jets – Primary .098, Secondary .095; Metering Rods – .075 x .047; Step-Up Spring – yellow (4" Hg). Use our Carb Stud Kits #8008 or #8024 if needed
looks like 95 and 98 would be correct,, someone may have installed the 96 by mistake or the only one they have,,, I am no carb guy but this seems to be an answer to your question or close to it..later