The SPX and the SPX reverse are not the same.The SPX Competition is the one you want for Spec racing.
Originally Posted by
hacker1
If I am mainly running 10.5 and some stock. Is the SPX recommended? Right now I am using the sphere and I bought a SPX reverse from someone for cheap as a backup. But I am a little curious about the SPX stock. My main questions is that will I feel a difference in this new speedo? Is it worth the money on trying?