Swapping pigs

This weekend I'm swapping the 3.55 SG from the Dart into the Coronet. Both are 489 cases. The 'Net's 3.23's don't work with the Hughes cam and Dynamic high stall converter. And with the Tremec 5 spd the Dart needs steeper gears so I'm having a shop swap out the 3.23's for a 4.10/4.11 set.

It's my first time removing a pig and popping out axles, but it looks like the PO installed aftermarket axles. There's no threaded adjuster. Can someone weigh in on what I may have? The Dart's pig on the right.

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