Valve Lapping Compound

I’m preparing for a top end rebuild this winter and am looking for valve lapping compound. I’ve read a number of threads on the matter and it seems that using a course grit followed by a fine grit is the way to go. The problem is I can’t find both. Powerbuilt has a package with both but I can’t

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Engine Valve Grinding Paste Lapping Compound Coarse and Fine