I was about to ask if it was a 11 or 10, that makes a huge diff lol.
I've seen the 4.6s put up good number on hp and tq, usually 25-35lb-ft less tq than hp. My vote goes to turbo, but I love the sound of a KB winding up. turbo can yeild epic number and still retain drivability. "less" stress on the stock motor for the most part.