Hi! I want lightweight pulleys- crank + others (should increase mpg slightly & engine response), so contacted UR who makes quality products. Here's their response:If 40 interested owners can be assembled we can make a crank pulley for roughly $200-250 depending on its size and shape. Each interested car owner would be required to submit at $100 deposit, once 40 deposit forms are received they will be charged and development of the part would begin. We would ship a production prototype to a willing owner for test fit and we would have them do a few other spot, then the owner would drive the car for a month to make sure everything functions accordingly. A production run would then be scheduled, which can take anywhere from 6-8 weeks depending on our regular production schedule. Once production is complete each owner is billed for the balance and shipped their pulley. If a group is interested let us know and we will e-mail the form to you that each owner will have to e-mail back to us.