Bridge for users between phpbb3 and php fusion 7

Hello, i want to make connection or something like bridge(preferable to be bridge) between php fusion7 and phpbb3 , phpbb3 will be master sistem , both will use the registration sistem of phpbb3. The main thing is to synchronize the users and users registration ,login/logout, i mean when user register or login/logout this to happen in the two sistems(phpbb3 and php fusion7) simultaneously (synchronized),also the admins ,permissions and everything important to be synchronized between the two sistems so to not have problems,bugs. I will give more information to the selected(awarded) provider. Preferable prise for the project is no more than 50 dollars. If project completion is successful there will be more modifications needed on the site for the selected provider.