What should be my next mod (see my sig for current)

PHP alt pulley?
JBA headers ?
Aluminium driveshaft?

I will stay N/A. Which of those will give the best gain in HP/Torque. P.S. I know that the alt. pulley and driveshaft do not really give HP they just let you use some that are already there.

Thanks

 

If you plan to run at the track a lot I would go DS. Though its issue is at 115mph, so you should be ok NA. But it is less rotational matter. Headers dont' really show a gain on NA cars, but sound great.

 

+1 go with the driveshaft. I have the mac shorty headers and the gains are very small for the amount of install time.

 

Nuke I've seen the PHP pully's from 1 to 5 hp so if its worth it to you then there you go!