Naa, the first Racing car was a Porsche GT1 98 with a little racing motor and a hefty magnet. It also had a lightweight shell, plastic wheels (skinny at front) and weight on the front axel.
The second Racing Porsche was the Racing Porsche Evo, which had the big racing motor, no magnet, no weight and alloy wheels. Then the Evo 2 came out and the Evo 2R, and finnaly the Evo 2RS, which has a Slot.It type grubscrew contrate, hollow front axel and slop for the front axel to move around a bit.
As far as I know, Fly will only produce a Racing version of their cars now, as all Evo 2RS features are incorperated into the standard racing models.