The stock 68/69-71 Hemi crank pulley is shorter than a stock B/RB pulley by about .75".

Put your water pump pulley on and pull the dampner out till the V belt grooves line up ,,, this is just mock up , no need to tear it all down to put the crank gear/oil slinger in place wink

Jim there are 2 hemi lower pulleys, it all depends on what water pump pulley you use. Up until ... I think .... sometime in 68 the Hemi used the standard B/RB waterpump pulley and had a very shallow crank pulley ... again "I think" ... that pulley is what the Milodon alum crank pulley is based off ? Then sometime in 68 Chrysler changed to the shallower Hemi only water pump pulley and the crank pulley was made a little deeper.

running up my post count some more .