I was just looking at some pictures in an old Year One catalog, and there's a pic of a speedo that does have a checkered flag but it does not say what exact year it is. It's an add for a turn signal lens 64-66. So the 65 probably did have a flag. Also Year one offers a re-build service for Speedo's and gauges. Also you might check over on classicalpontiac.com there are lot's of owners of 65's over there.