1969 Z 2/8 early smog

[William]

Engine bay photo from the January '69 Hot Rod magazine. Car still exists; was final assembled on or about September 30, 1968.

I doubt there was a first/second design. Both were production parts; workers used whatever was available.

[Steve Shauger]

Just an FYI,. A 2D survivor car Z28 I owned had the early style left smog tube. I believe it's a valid data point because this car was never modified and the original owner still owned until 2006/2008. Exhaust manifold/smog had never been removed, however normal maintenance items were replaced as needed.