Chrysler parts catalog shows Valiant and Dart part number #3514974 for upper ball joint . Have a new original Chrysler ball joint which measures 1.77 inches, same as S'cuders measurements. All of these sockets perfectly fit this ball joint.
Miller 3714
Snap on S6302
Mac SC-52
Proto 6549
All can be found on eBay.
To simplify the catalog listings of the above sockets, the manufactures round off the sizes to 1.750 or 1 3/4. Actual measurements are 1.78-1.80.