I've always heard after about 15-16 pitch props on v-drives you have trouble with em braking blades, you must be running some pretty tall gears already considering the rpm disadvantage a deisel would have in a v-drive. Definitely a cool deal though. I was down at imco about a month ago and they have been tweakin on getting a duramax running right in a 20 nordic with an i/o. they were telling all kinds of stories about how much trouble they had at first getting the right combination of turbos on the deal. Alot of friggin R&D time i bet. Are you guys gonna be down at Long Beach this weekend?