Hello, PM sent. I may be wrong, because I usually am, but I believe what separates them on Quadrajets for 67 and 68 is how the throttle cable is attached to the throttle arm. Ball clip on style vs. a pin style with a hole for cotter pin. The one pictured has a pin style with hole for a cotter pin. I am unaware of any other differences. Thank you, Jason
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Jason
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