http://www.ststurbo.com/

Check the link above for data on HP on turbo.
$ = HP and HP = $ The more you spend the more hp you can get. The more hp you get the more money you have to spend on the rest of the vehicle to handle it. Drivetrain, tires, brakes.

I have not actually done it. I am still considering it. My 3.4 swap was completed just in DEC 06. I want a chance to see if it will do what I want. If not then I think about a 5 psi turbo would do the trick for me. So far I have been pleased with the normally aspirated 3.4 alone.

The 3.0 inline 6 is definatley a monster and has the history of easily kicking out huge hp. I think I may have viewed the same article you have. He also mentioned that his drivetrain was having a hard time handling all the hp and the traction of big truck tires.