whats the difference other what is already stated in a reverse cut R&P or is tehre not one? and i couldnt remember if my xj dana 30 had reverse or not i believe it does but dont wanna go buying on a belife

If you XJ D30 is high pinion, you have reverse cut.

Depends on what year. :p The last couple of years they came with standard dana 30's.

Assuming you have an 89. Then it would be a high pinion.

so high pinion = reverse cut?

so high pinion = reverse cut?

Yes