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Here is the vacuum diagrams for your vehicle. In the picture the first diagram is for a vehicle without California Emissions and the second diagram is with California Emissions.
If you need help or have questions please let me know.
The diagram is for a 4 barrel carb. GM just uses a simple carb for there pictures. If you look at the diagram on the carb the letters on the card are the most important info. If you look at the carb you have it will have the same letters.