My ECU is Subaru Impreza WRX V10 2004-2006 G4 Plug-In, my engine is EJ207 with AVCS Solenoids on inlet and 3 camshaft position sensors, but I can't connect camshaft sensors at the back of head, 'cause there is no pins for it. I think I need a 2007 ECU version to use 3 camshaft sensors to control VVT on this engine, right?