How hard to find this 70 axle?

[72farmer]

I pulled the axle out of my 6 lug 67 today.It has wear where the bearing runs.I thought I had the problem under control because I had a friend that had a couple of used ones.
We compared them and mine was about 3/4" longer.I found the numbers on my rearend TDE 0922W2 and I think it is a 1970.I bought a relocator bearing/seal and I am going to try it.How hard would it be to find a used axle this length?Aint measured it yet but it is about 3/4" longer than the 67 axles.