The reason I asked about the pulleys was because of the alternator pulley alignment. If you use the original style crank and water pump pulleys, you will also need to use the correct original Hemi alternator pulley, assuming the the new pulley is the same as the original, with the exception of the mounting holes. If the new balancer is made for the BB crank pulley depth, you will be able to use the standard alternator pulley and the BB water pump pulley.