What pulleys?
 

So there are lots of different crank pulley options out there for the 370Z both for light weight stock size and under driven, and I found a light weight alternator pulley made by Unorthodox Racing.

My question is, are there any aftermarket pulleys for water pump and power steering? Looking to go light weight stock sized for all of them.

If you take a look around the forums here, you will find that NST pulleys are very popular, offer the best performance benefits for any n/a or turbo project, and keep the alternator at OEM speeds.

We hope to offer other pulley options in the future, as long as the community shows their support.

Good luck and have fun with all your projects!