HPI Sprint 2 Flux Wheel
 

Which is the best wheels to use to raise the car up a little. It is too low for brushless

Too Low?
 

What do you mean the car is too low for brushless..... The wheels and tires you use should only be a factor in ride height if you are using foam tires which I doubt you are using on a Sprint 2.... Other then that you should read the cars manual and adjust the rideheight per their directions.