Maybe it was a biased over statement, but since it sounds like you plan to race it so....
Make sure the motor is legal for where ever you plan to race it. If I remember right, the flux is a re badged sidewinder 5700.
It is a sprint 2. It is a nice durable car, but I would consider it far from a racer. The sprint 2 design is old and there are much better cars out there. Once you really get into racing, I think you will find yourself behind because of your car. At that point you will start upgrading the car or buying a new one. Just my opinion.
Don't get me wrong though. TC racing is all driver. I have a friend who has a sprint 2 and drives it really well.
*Photon* *SC10 4x4*