Welcome to the Z! Wish I had a cummins, work supplies me with a Powerstroke Superduty so I couldn't justify 2 diesels, so I enjoy my HEMI instead. I agree with you, I'd rather have a 5.9L myself, I think they were just absolutely SOLID engines with so much potential to upgrade. and NO emmissions requirements
I've seen a few 5.9s that're in the 6-700HP range with wicked torque specs using twin turbos. What all are you still planning to do to yours?