The push rods are no dought ladgit the valve springs that came with them are aftermarket they have an inner and outer spring and the rockers from what I was told were factory don't have the factory numbers stamped on them I saw a similar set that were like mine and they were ersen I was looking to post everything but Im going to keep the parts going to use stock set non adjustable rockers and pushrods and rebuild another 273 later with 340 heads and a new assembly