Can someone please tell me what type of wrench is needed to take the lower housing bolt loose ! You can look at that sucker all day long and not a wrench in my boxes fit worth a damn ! I've been turning wrenches since I was ten years old and I'm 65 now, and I was pretty well stumped. A manifold wrench , ground down offset , what ? Oh yeah, what about something to fit the ignition control module screws ?