Well, after a week of driving this thing, here are my thoughts.
First and formorst, truck needs a good tune. Badly. Its slow. Not quite as slow as the v6 was thanks to the 140+ HP and 40+ft lb difference. But its disappointing. I expected more. Maybe I should have swapped the 3.08 rear for a 3.73. Its still an option.
The motor itself however, is wonderful. Smooth as hell, no noises... Its like driving a new car. I think I could stack pennies on the intake manifold. I can tell the power is there, but I just can't make good use of it thanks to gearing. Hell top of second is right under 100 mph.
I also need to get the 4l80 ready. The trans I'm running is out of an 01 v6 truck and it just feels weird. So I'm in the process of ordering parts for the 80 build up. After that's done I'll start gathering up parts for boost. Hopefully by the years end it won't be so slow.
Also, if anyone has HP tuners, I will buy the license credits needed for my truck, I would really like to do some tuning. If not I'll have to push back transmission and turbo to buy hpturners. Just don't wanna spend 500$ to tune my truck and have all those credits left.