Dana 60 nut identification??

[Minimallimits]

Just bought a used Dana 60 for my swap into my 96 dually. Pulled off the locking hub and found this nut. Any idea what this is? I have the socket for the standard spicer nut but this is completely different. It had a 3 bolt lock/free selector. Any help is much appreciated. FYI it’s a dually Dana 60 from a 94 cab and chassis truck.

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[u2slow]

There's gotta be a way to take the GF9 ring and inner gear off so you can use the normal 6-prong socket on the spindle nut behind.

Is there a stub-shaft snap ring to remove?