My thoughts on the "high rpm" miss are...
Spark Plugs, Wires (both already suggested)
Could be a bad coil pack
Maybe the intake needs cleaned, there's a how to on the main page
The intake cleaning that doesn't require removal of the intakes is easier and less time consuming. The manual removal of the intakes really isn't all that hard and most of the time spent is cleaning carbon/oil buildup out of the intakes.
Being a fuel injected car, that fuel pressure is probably fine. (im not farmiliar with what the pressure should be, but its not like a carbureted system)
There is no distributer. Almost everything on these cars is controlled by the computer (Timing, air-fuel ratios, etc.)
These motors do tend to like high RPMS due to the dual stage intake. As you may know, the intak system has primary and secondary ports. The primaries are always in use, but the secondaries open up at ~4000rpm. You should feel a little "kick" when accelerating over 4000rpm
Just as some background on this car, the duratec motor was designed by Porsche and Cosworth (Kudos for the secondaries). They are known to require maintenance but unless neglected are awesome cars. The heads have 4 valves per cylinder (2 intake, 2 exhaust) and are made of aluminum also. Hmmm... I think that's all the important stuff...
Quote:
I have even heard that some cars can rev upwards of 6000 rpm now.
Now, im sure you know this, but redline on these Duratec V6's is 6,750 rpm... (I think fuel cutoff is at 7k)
3.2lb. pistons... 
