Do I have reason to be concerned???

Mike....what axle is that? If it’s a stock 8 3/4 A body axle, I can fix you right up! I have a onesie I would gladly give you if that’s what it is. The one I have is 27 7/8 from wheel mounting flange to end of axle, has RH 7/16 wheel studs, and the bearing is already removed. I robbed the adjuster for an E body years ago. Bearing surfaces and splines look good, but it could use a good soak in vinegar for a day or 3.