What would be a good shaft to replace my TFC 129 with?

Right now I am using two regular flex shafts in my two g10 woods. Since buying the clubs I have grown and my swing speed has increased. I now need to use stiff shafts in both of the woods. What shaft would be a good replacement to the TFC 129? Should I go with a shaft by UST because they make the TFC? Any suggested shaft would need to have a .350 tip opening. Could you please give me a link where I can the shaft?