Hey Jon, South Salem Cycleworks has what I need in stock. It is original to my bike.
Cannondale 47mm Shifter Boss Kit. Used, $65.00/each
https://sscycleworks.com/components/shift-levers-cannondale-shifter-boss-kits.html
I've attached a pic of another Cannondale I own, 1995 F700. Looks to be the...