All very good answers, and they align with my thinking.
I ask this question after hearing a rumor. The rumor said "...you could take a 911, change the oil, then run it Coast to Coast at redline without any problems."
I started to think that a Turbo may have problems at redline (under boost) for extended periods (especially Coast to Coast). I don't think it would be a engine issue - I assume it would be a turbo (overheat?) issue.
I know the 930 is heavier, and dirtier (aerodynamically) than the standard Carrera. With that in mind, I would assume it needs boost to even come within 10 mph of the top end of the standard car (standard Carrera does 145-150?). With boost, it should be able to sustain 155-160 (my car has a K-27 with 1 bar, so maybe I could get even more out of it).
I don't have the guts (or maybe I have too much brains) to drive a 16-year-old car over 130, but I'll take your word that it will do more!
Thanks for the other insight. I am especially impressed with a 150 mph run without hands!