MI68442W30

I have a 70 TO code 391 posi rear axle I am considering selling ,completely rebuilt quite a few years ago with no miles on it , it spent it's life in a race car and never was left outside ,garaged it's whole life ,there is no rust pitting .it's currently under my project car collecting dust until I finish the car . only reason for considering selling is to get a correct 68 31 spline rear axle [for my 68] that is for sale . any interest? will only sell if the 68 rear is still available , asking $ 2500.00 OBO pictures upon request pick up only . taking offers