water pumps

You will not be able to use the water pump pulley from a late model magnum engine.

The late model magnum v8's spin the water pump the opposite direction of the LA and the water pump pulley has no grooves becasue the back side of the belt runs the water pump. Plus the pulley is pressed onto the water pump shaft (the end of the shaft is threaded and the fan is screwed on.

Be careful about mixing parts. You will need all the pulleys to be the same width with the same number of grooves.

Might be easier just to look for a smaller v-groove pulley for the crank so you aren't spinning the accessories as fast.