All I can say is check your parts thoroughly when you receive them for fitment.
I went to start bolting the accessories on the engine this afternoon and the main pulley wouldn't fit. Upon investigation...the new balancer is actually designed for later models in that the pulley bolt holes are symmetric, unlike the older Chrysler stuff that has asymmetric bolt holes. Since at least (2) holes are off in each position, I found it easier to just pull the balancer from the motor, scuff and paint it.