I don't think so Charles. My understanding is the push rods are different lengths, they go with the cover, bearing set up, so I don't think you can use a later push rod unless you use a later cover. I might be wrong though.
Mr Bum makes no mention of the push rod. I guess I should think this means it works as is. I don't think he ever passes up an opportunity to add a couple extra paragraphs to his web pages, does he?