Ball joint socket size and where to purchase?

townsend said

These sockets are for the early Mopar ball joints.
Snap On s6302
Mac sc52
Proto 6549-L
All are on eBay.
Proto 6549-L has the lowest price.

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I found a proto 6549-L. Before I order it, Am I understanding correctly that this will work for 60-72 A-body Mopar ball joint? Not trying to second guess your info or be difficult just looking to make sure I’m making the right decision. Thank you!