I almost had to do that when the starters weren't available a couple of years ago.
The ones that are available now are for 61-65. I guess you are calling them short nose? but according to the catalogs... 66 something changed.
https://www.rockauto.com/en/moreinfo...pt=4152&jsn=14
When I was doing research to rebuild mine the plan was to use a big bock starter and swap the guts. Glad to see you got your issue solved.