Cutting and respling Axles?

Yup, E-body axles won't work. The ones that will have been covered, C body and trucks mostly (but not even all of them!).

So much easier to just order a new set from Cass @DoctorDiff. For $300 you get a nice new set of of axles that are much stronger than the originals ever were. After you've located a set of axles you can cut and re-spline and shipped them back and forth to Moser it's really not that much more money for new ones.