I am sure the Oregon is capable of grinding Mopar lobes, the machinery will duplicate the profile of the cam lobe master that is loaded in, the problem is that Oregon does not have any Mopar cam lobe masters to have the machinery duplicate.
For the last cam I had ground at Oregon, and this was two years ago, I was on the phone with Ken and he did not have any masters that specified a .903 lifter, eventually he did come up with one that specified the Ford lifter as the minimum diameter lifter compatible with that grind.
Perhaps Oregon now has some Mopar lobe masters. But they did not as recent as a couple of years ago.