I live near Toronto Canada and recently posted an add looking for a 4.56 rear end , no luck but I got 2 offers trying to sell me a 4.11 rear ends , but won't work for me
Maybe I'll contact these sellers and go pick them up then when the border opens I can bring them south next time I head that way , they were asking $1.50 Canadian a piece.
I ended up finding a good 4.56 rear but had to buy a complete set of a 65 k 20 4x4 . The rear was a HO 52 but the front is something different , I'm not sure but I'm guessing that was how it was done .
John