Duster ball joint questions.

The socket I have is the big ball joint socket. The ball joints are def smaller. The lower ball joints are def different from side to side. there is no adapter plates installed. Both wheel stops are facing in. Is it possible that someone before me put a lower ball joint from a different a-body? I just want to order the right ones. The ball joint socket I have is a snap-on s9479a

Ok I just went & checked my own 69 Dart & I have the small ball joints. & I have 3 sizes of ball joint sockets.

Snap on S9479A Large
Snap on S9365B Med.

& a third with no marking's & it fits the small Moog joints in my car. The S9365B is obviously for the larger 73-76 uppers & I believe the S9479A is for the trucks.

Sorry for the confusion & hope this helps.