This thread has gotten me thinking....
I am going to sell my 97 and get back into a SD. Was going to an 02 or 03 7.3, throw a forged rod motor in it, swap over my go fast stuff and be at a decent 350hp. But would still need at least $8K for a larger turbo and built trans. I'd easily have $20-$25K in the truck (not counting the $$$ in parts I already own).
BUT... after reading this thread, I'm leaning more and more to a 6.4 instead. More reliable performance at the same hp levels, newer so better resale value, newer creature comforts, etc. The only real downside I can see is it's more money out up front and a payment.
I'll still have a 7.3 around the place, it just won't be the main rig. Gonna keep my eye out for the right one over the next year or so.