Need Holley One Barrel Recommendation

Found this information in the 1976 service highlights manual that Chrysler supplied to mechanics on the Automatic Idle Speed diaphragm system used on the Dart Lite-Feather Duster. It seems like erratic idle was a problem from the beginning. The AIS diaphragm is missing from my Dart Lite carburetor. I have not found a part no. for the AIS diaphragm in the parts manual, perhaps it was only serviced with the complete carburetor?