I have the same ski - the marking is Radius >or= 21, which is to show that it was FIS compliant at the time. The actual radius with a 185 is more like 24 or 25. Agree with the above comments that it is too much ski for a NASTAR course unless you are a very low handicap. It is very difficult to ski in the first several gates and you will definitely be giving up time there, however once you get the speed up it is incredibly solid, fun, fast, and thrilling to lay it up on edge and put the hammer down.
I got mine from a sponsored college racer and they were supposedly "race room" skis with an extra layer of metal so they may actually be different from the normal retail version. I am a high single digit racer, 6'3" and 215 lbs, and plan on going back to cheater skis after accepting the fact I am just not talented enough to make these skis work well early in the course. A guy who was very close to me in handicap and skied a FIS ski switched to a cheater ski this season and dropped 3+ points. He said lots of people were asking him what he was doing differently this year and his answer was, "nothing, just switched skis and the new cheaters are sooo easy to ski." My guess is that I am going to miss the freight train feel these skis had but enjoy skiing the entire course and the lower handicap.
If the course where you race has a big, steep, start ramp and the first section of the run is steep so you can get lots of speed early then they may work fine for you as long as you have the ability to lay them over and make big angles.
Ski fast, have fun!