No ARB for the Dana 80 in 4.10
The airlocker works well but last time I checked ARB only makes it in a 3. 54 ratio carrier for the Dana 80. I've found the stock Trac-lok works well for most applications if it is properly setup and the friction modifyer is restricted. I trashed my spider gears after a season of intensive sled pulling with a stock Trac-loc but nothing but my Mitchell clutch seems to be bullet proof.
I noticed three Ford Dana 80 4. 10 limited slip, Dana carriers on eBay starting at less then one hundred dollars. The ad said 35 spline axles but I don't know if they would fit or adapt to a Dodge rear or not. HTH's