As far as I know, only 1 antenna was ever functional with duals. They were a fad into the mid 60's on Impala's too. I see them on '64's quite often but I don't know if they could be had from the factory, or the left one was only over the counter.
__________________
Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
|