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740 & 760 HELP: 740 Diff Identification

mjk_9574Matt @mjk_9574 Perth, Western Australia

Can someone help Identify my diff type?

I’ve bought a wrecked 1990 740 GL Auto and pulled this sticker off the diff (top photo). 

Is it a 1030 or 1031? 

Because I haven’t been able to find a 3.73 1031, I figured I could source a 1030 diff to swap a CJ Jeep Dana30 3.73 gearset into.

The bottom photo is the sticker on my 1993 940 GLE for comparison, clearly labeled “1031”. 

Cheers

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