That doesn't look like the North American Canadian designed Mystere 5.0 at all! Very different hulls. Mine has skegs and nearly plumb bows as well as a square top main. Compare these:
[img]http://www.catsailor.com/forums/download.php?Number=100238[/img]
[img]http://www.boatsandoutboards.co.uk/images/pics/F133697_1.jpg?r=4870[/img]

Hmmm....any idea why photos won't show here?