Chrysler starter spin down time

This is only a guess but maybe the hole is where a tag was attached with a rivet.

I understand how you feel, I had a mini-starter on a Mopar, despite the advantages I missed that special sound.

Thanks Goldfish,it nice to know im not alone in liking them,it seems a lot of folks here have great fondness for the special sound of these starters.

I hadn't thought about that,I guess a tag could have gone there. I know the old auto-lite starters had a metal tag on the housing. Ive seen some others on ebay with that hole too.