I'm wondering what this bolt and pin were used for? Driver side of the manifold
the idle stop is on the passenger side front corner of the carb on my 72. I think 71 was in the same spot but different design. This area is on the driver side of the carb. The image is one I found on the webMight?? be for idle stop solenoid. I think they were used on some CA smoggers and also with AC.