Depends. It would probably need certain customizations to fit into the Kohana system. Definitely check into the Kohana IRC channel, the lead developers who port

Depends. It would probably need certain customizations to fit into the Kohana system. Definitely check into the Kohana IRC channel, the lead developers who ported the CodeIgniter libraries themselves will be in there and will be there to help you (#kohana on irc.freenode.net.) The fundamental differences (general structure, etc.) between Kohana and CodeIgniter are currently pretty low, so it shouldn't be too much.