? about 360 crankshaft.

Are the cranksafts out of a LA and Magnum 360 the same? the reason I'm asking as I was looking for a "reground" crank for my LA and several vendors show the same crank part number for 71 thru 2003. If so I have a good magnum crank I could use. Mainly concerned with balance as I know the external balance weights are different between the two.