I think I just saw one in classic industries catalog. I can look in my parts book tonight to see if it shows the p/n. As I recall it does not. I heard they were only put on 400 cars. The two half’s are riveted together but it bolts to the starter.
1968 400 convertible-wife's summer car 2009 G8 GT supercharged 1991 Toyota MR2-lot's of boost (my dark side needs rice)