Your frame is BB30 or PF30. Your crank is 386EVO. No sweat. This adapter from FSA makes it happen. - For road use - Weight: 50g

FSA (Full Speed Ahead) Polycarbonate Headset Stack Spacers

Alloy headset spacer to fit 1 1/8in fork steerers. - Alloy with FSA logos

FSA Service Parts for BB30 Frames

If your plan is to install a 386EVO crank into a PF30A or BB30A Cannondale frame, look no further. This adapter from FSA is just what you need.