I had a 408 for quite a few years. Bought the race balanced rotating assembly from Hughes. It was the Mopar Performance cast crank. I forget who the manufacturer would have been for them(Mopar) at that time. Would have been 2002 or 2003. It was a 15 to 1, aluminum headed engine that I turned regularly to 7200. I still have the crank. It is not broken. AND, to top it off, I ran a stock neutral balance 340 balancer on it. Engine was together for ten years. Only reason for still not using it is, I tore it down to freshen and got bit by the gen 3 bug. I guess the point of this rambling is who gives a flying **** about cast cranks and rubber ******* balancers! Let RAMM show us some info without getting **** muddled up!