Originally Posted by plac
so you can put a "r" reverse gearset in the rear axle?
No... only if you have a High Pinion Dana30 rear, which doesn't exist.
It has nothing to to with location, it's all about which way they are cut.
You can have a Dana60 rear end (low pinion) and have a Dana60 front end (low pinion) and they will use the same gear set, front or rear it doesn't matter so long as they are both low pinions.
When you have a high pinion, the teeth are cut in reverse because the pinion is on the top. It's confusing, but visually, you'd see as that's why I posted the picture.