[60sstuff]

Originally Posted by Joe37

Lets go with this,
1964 and older, all vacuum operated, manual or automatic transmissions
GTO, and big car

1965 - 1966, automatic transmissions , vacuum operated tripower
1965 - 1966, manual transmission, mechanical tripower

Mechanic linkage was available over the counter prior to 1965
Aftermarket kits also available

That looks correct.