Duramax for drag racing and it is streetable. You also have better fine tuning for launching in any application via EFI Live. I think nolimit diesel performance is in the 10's.
Not to mention, building boost on a dyno, and at the truck pulls is completely different then trying to light a big turbo or even twins at a track. Esp if this motor is going in anything but a truck, it could be a real challenge to stage a cummins in a car.
Just a thought.
I am on dieselplace also.