Add to JXtend Finder

Hello.
The last hours I was searching for a searchenginge, which will allow, to restrict a search to spezific sections (for example).
The best solution I found was JXtend Finder. There are already plugins for K2, Jomsocial,... but I would also need a plugin for Community Answers.
Do you think it is possible to let both systems work together, so that JXtend Finder will also find elements of CommunityAnswers?