Contact Tony SanMarco at 954-764-1724. He's taken care of Gregg's Sonic's (for the most part) and will know how to reach him. "Gregg" has been pretty ill of late, but his boat is still in business located just south of Las Olas Blvd. and just north of the Bahia Mar Yachting Center. The street there is called Seabreeze Blvd.
Hope that helps.