Love the Cannondale. I have the exact bike in a med that I am also updating. In my younger days I rode this bike with the long stem and flat bars but I’m too old for that now. I found the stem I think you are looking for. It’s a stem from Reverse Components and it looks like what you’re looking for, here is the link: https://reverse-components-usa.com/products/reverse-s-trail-cannondale-stem?variant=42416991666326¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&utm_campaign=gs-2021-06-04&utm_source=google&utm_medium=smart_campaign&gad_source=1&gclid=EAIaIQobChMIhfjKtL6zhwMVLHZ_AB3-pgJdEAQYASABEgKfXPD_BwE