1969 Z 2/8 early smog

[Mr70]

I've always believed the Drivers side Hockey stick tube was the first design used on the earlier assemblies,and the middle connection tube was the second design used on later assemblies.When exactly that change occurred,I don't know,but I believe your early camaro should have the first design Hockey stick tube before you asked this question,and Jerrys book,Williams photo and Steves photo support this.

Steve,I see the drivers side second design on your 2D camaro.