Originally Posted by Salamandrine

Got pictures? How old are these SIDI shoes? There were at least 3 types of cleats for SIDI shoes from the old days of slot cleats. In addition to that, there were transitional era ones set up for both clipless and slot cleats.

There was one type of SIDI cleat that had to side by side bolts kind of like an SPD cleat. I wonder if that is what you are using? You could try ebay. There might be a generic Pavarin or something that will fit.

The search engine on this site is useless BTW. It works better to search it using Google directly. type your search terms into Google, then type site:bikeforums.net/classic-vintage/