I would but short 63's here are going for the same money as 60 series 5 speeds. ($350-400) And my driveshaft has been set up for that box. So I'm gunna have to fix it.
If it does come to pass that the crappy four speed's gizzards will work, that'll be great news for patching up 63's.
Although this will be the last time I take this box apart. (Which I also said the last two times I pulled it apart lol)

I should post a coparison pic between the 63, and the 56's counterchafts. It's little wonder that the 56's break like glass.