Check with Franks Cyclery in Raleigh, NC.
http://frankscyclery.com/He's a Salsa dealer and mechanic extraordinaire, who just built up a Vaya for my wife. I came to him with a plan and he implemented it. Highly recommended.
Anyway, I was in his shop on Saturday and he has a green Cutthroat partially assembled in his shop. Not sure of the size, but if it's not a medium, he might be able to get one for you. Tell him Norm sent you.