There is no ways on hell this thing is going to go anywhere near 60-90mph. The picture is of a random rotax engine and then you have a completely different jet ski below the pictures of your so called "motor poweres kanyoo" you have a design made in CAD there no dimensions or anything. Lol we both know this is bullshit so please dont even reply with your bs.
Mate, please read carefully!
Thex talk on 60 and 90HP....HORSE POWER !