Searched but no luck. Internally balanced 408 Magnum. Want to keep serpentine assembly from the 2002 truck but I'm not sure which balancer and pulley to get? I've found the balancers, but not the serpentine pulleys. I'd use the pulley off the non balanced one I have (5.9 Magnum), but it's integral to the casting of the balancer. It doesn't come off.