This would be an awesome investment into a racecar. At our track were allowed to do headers and if you say it adds an extra 10 HP, then that would be excellent! Were rarely teched (in terms of taking the engines apart) so a miata cam would help out too HAH.
Back to the header though, again this would be an excellent addition to the car
![Very Happy :D](./images/smilies/icon_biggrin.gif)