8.75 - 741 & 489 Rear Ends Worth Restoring?

Greetings!

Are these 8.75 - 741 & 489 Rear Ends Worth Restoring? Or are they junk?

Also is there a 8.75 for A bodies and a 8.75 for B bodies. Or are they all the same?

Thanks for the help...

Alec

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Sure would like to have the 741 if it didn't cost a million dollars to get it to Ohio!!