Pic is a friends 66 it looks like the vacuum is taken off the stud on the rear carb even thought the sams I sent you show all three years the same . they were GM bulitins too
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"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves." Abraham Lincoln
"A free people ought not only to be armed and disciplined, but
they should have sufficient arms and ammunition to maintain a
status of independence from any who might attempt to abuse them,
which would include their own government." — George Washington
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