Not sure where I was supposed to post this. I have a 16 ft Welcraft Airslot. There is no plate as to what it is supposed to use as hp. it has a 100 hp on it now but has never run for me and looks like it had a bigger motor before this one because of other holes in transom. The boat is about 6 1/2 foot wide and can carry 6 or 8 people. Has a walk through windshield, deep front V hull with the sides hanging down a little from the front to half way to the back, sort of like a tri hull. this is all I can tell you. the motor now is a merc 63 1000 100 hp. I am planning on buying another motor. Thank you very much for any help!