The oil pump covers are the same, but if you haven't lost yours, all they need is manual lapping to clean them up if that is the concern.
Place a piece of fine emery or wet sand paper on a piece of glass, run varsol over it (it's great if you have a pump). Hold the paper with one hand, take the cover with the other and make rub it in a circular motion on the paper. Give the cover a little rotation each turn.
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