I take it your GTO didn't have a 12 bolt in it originally?
These I think are the U-joints that should work?
(been a very long time since I did this)
Napa PN 372
Precision 372
Neapco 3-3130
Spicer/Dana 5-3022X
I used the 5-3022X I think.
But probably easier to take one in and compare.
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John Wallace - johnta1
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