I have for sale a Lightweight Pulley made by Agency Power. It was only used for 500 miles before being taken off. It is brand new and it is worth the $100 you will be spending. It helps with your acceleration and also this is the lightest pulley on the market for the wrx. It is the same diameter as stock so you don't mess up your motor like those underdriven pulleys. Well if interested shoot me an email. I only accept paypal also. Thanks.