Yep, parked near to it and had a look round. The owner wanted something silly then, but it was in a spotless condition.
That however, is frankly barking mad! It's sort of rare and low mileage, that's about it. It's still just a 5.0 TBI RS.
Dunno what it is about the RS ground effects but they look far better than the Z28 IMO and even on the 4th gen the RS bits look better than the Z28 or SS.