https://www.nopistons.com/forums/pub...DIR#>/moon.gif I WANT THA UNDRIVE PULLEYS, BUT CAN U TELL THA DIFFERENCE IN THA HORSE POWER INCREASE. AND ARE THERE ANY KINDA OF ADJUSTMENTS WHEN U PUT THEM ON, CAUSE HELL I REALY INT PAYIN NO ONE TO DO IT FOR ME, WHEN I CAN DO IT MYSELF . U GUYS HIT ME WIT THAT INFO .

Do you have an NA or Turbo?

i felt this was one of my worthwhile mods, it was only $150 and aside from exhaust add the biggest bang for the buck. They look cool too. I got mine from rx7.com.

Yeah, I felt a diff. too on my vert, but I only paid $107 for for the alternator and eccentric pulleys. I bought them from Racing Beat. The eccentric pulley can be a big bitch to get undone. READ THIS before you do it.