Hey Kids! Its the old lady

Hello and welcome
I think all the 833 four speeds are the same (well maybe not the late overdrive ones) EXCEPT which shifter holes get drilled and tapped and they all have the bosses cast on them, at least the A/B/E/C bodies are.
If you really have the 7 1/4 rearend you need to change it to a 8 3/4 as my slant six (stock) breaks them.I am not sure that you can get suregrip in the 7 1/4-but if you can I could use one....for my 64.
Lynn