For the 99+ V6, pretty limited options out there. ASP U/D crank pulley is about it. I am actually selling mine off of my '00 V6 since I got the Vortech installed...if you think he might be interested, shoot me a pm or email me @ bluestang00us@yahoo.com. New, our U/D pulley runs around $170 or so b/c it includes a new balancer since the stock unit is a single pulley/balancer unit.