I am trying to justify a pair of Ilmor motors and some arneson surface drives. The price seems so steep. I have built motors for boats in the past and I have had good luck with them. The caveat is that I built them very close to stock. It was a simple process of switching to stainless hardware. I am now building a go fast boat (37 Coyote) and I will need more ponies to get the boat to a speed I can live with.
The Ilmors will pull true HP/torque as advertised. There are other builders out there I know this won't be a cheap proposition. I would like to be confident about the both the power plants and the price I paid for them. Also, Ilmor has its Indy drive and ICE control system. I've been in boats for a while and I have learned that the price is more often than not a loose ballpark after you get all the goodies needed to actually implement your newest marine widget.