I have a 1988 SUPER SPORT [13] and in 2019 I re-powered with a SUZUKI DF30atlw2. I love it. I think a DF30atlw2 is the perfect engine for a [SUPER SPORT 13]
[The SUPER SPORT 13] can easily carry a few adults and children and get on plane. Top speed is 29-MPH with me, my wife, and two small kids aboard with Bimini top. I haven't taken it out by myself and tried for a top speed trial but I should be able to get to 30-MPH or slightly over by myself.