7.25 and 8.25 axle shaft interchange?

I have a donor 8.25 rear that I will use to replace my 7.25. Problem is the donor 8.25 rear axles are pitted very badly on the bearing roller surface and will need replacing.
Question: are the 7.25 axle shafts compatible with the 8.25 rear. I don't see any visual, they are both 27 spline if I can deal with the bolt pattern if there is any difference there?