Yes, it's a complex modern engine with a lot of wiring and MEFI 5 computer doing alot of work
No, I wouldn't consider it for a typical ski boat with any hook in its hull
Yes, it is expensive, figure about the price of (2) 300 hp motors
No, it won't fit under the motor box of the standard small block box but I think it would fit under the big-block box
Yes, if I won the lottery I would have one just to be different.