Duel rudders, Your takes:

[Wake Bandits]

The small block vortec with the Volvo TPI drive is what I'm suggesting.
Not the Diesel.

[mtnsmith]

If they could get the weight down on the IPS and size so that it wasn't so large under the boat, but I don't see them doing that anytime soon. The smallest IPS with a 4 cylinder diesel weighs 1646lbs. It is a neat design though.

[dogbert]

I think I'd just settle for the diesel.