I have a 1989 Hunter 30 which I have owned since 1998. It has a four place organizer and four clutches on starboard. I want to add an organizer and clutches to port. Is there a mounting plate under the fiberglass or will I have to remove the headliner and add a plate to mount the hardware? Thank You,Kent Reynoldsandiamo2@chartermi.net231-264-8360