Fastest Duster on stockish suspension?

Oh, a Strange axle housing … gotcha
Moser 3rd member… gotcha…

car has its born with 8.75. I broke the ring and pinion last year. Replaced the factory center section with a tougher Moser center section to finish the year.
Plan to buy a complete S60, and sell the 8.75 currently in the car, including the new pig