Catalytic converters

Garrett Ellison said
My first catalytic converter equipped vehicle was a 1973 dodge D100. Unleaded fuel stickers on dash. But, that may have been California emissions. Also, we had a 1974 Dart that was catalytic converter equipped, but also probably California emissions. My post of 1973 may be correct if California emissions equipped, but is probably not an across the board deal.

False. Your memory is failing you. Even in California, the trucks were the last to get converters. You never heard of the Little Red Express truck?
The 1978 model year was the last year that trucks were built without catalytic converters.
1979 was a sad year. No more big blocks and every truck got the converters except heavy duty units.