Make sure and check the ring side clearances before making your final decision
if it has more than .006 on any of the rings think about buyng new pistons.
I use to race a M.W. stocker back when we had to run OEM stock pistons, the top ring lands had .009+ side clearances and the second rings weren't much better. That motor would blow the stock push on breather caps off during the burn out
I should have had them cut for ring spacers to take up the space so the rings would have been kept square to the cylinder wall