If you contact Johnson speed warehouse they have NOS & factory rebuilt that came from GM that they bought about 15 years ago. They bought about 10,000 of them in a deal & sell them now. They are all great carbs . I bought one about 10 years ago & it was a pkug & play unit. All I had to do was adjust the idle speed & it was great. You can find them on the net. If you have a carb # they can help you out .
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