Just say no to a phord 9" in a Mopar.

Danas are super cool and tough and if the OP is gonna beat on the thing hard with sticky tires, it is the ultimate rear. But his 8 3/4 will handle most duties. I have had an 8 3/4 in my Cuda with a 500" Wedge for more than a decade. And now have a 540 Hemi in front of it.

I have hurt a couple of gear sets over the years but that still doesn't amount to the cost of a Dana.

We run 3.91s. Mostly because they are a good compromise between fun and hiway cruising. If we ran more hiway, we would have higher gears. If we raced more, we would have lower gears. But 3.91s are a good match for the way we run our cars.