we have a 2003 240 sundancer. Our horn went and I’m trying to find its replacement. It’s mounted on the front of the boat and there are 2 holes drilled out for the speakers to slide in. The only luck I had was for the “speaker- ferroelectric loud speaker “ from the us patent # 4979291. The speakers seem to be attached to the grille. Any suggestions on a replacement. Do you think I’ll need to change the size of the hole? Many thanks!!!