Strange they would face the blower intake forward. That is a good way to ingest water into the motor. All the Unlimited Light Hydroplanes I have hung around with have the blower intake facing rearward. Since the blower creates an artificial atmosphere there is no advantage to having it face forward - like on a naturally aspirated motor.
$40k for a boat racing motor? Must be a cheap one!
In hydroplane racing we discovered the magic pricing formula. Take a standard automotive part and add the word "marine", that will double the price. Add the word "race" and double the price again.
-Eric