Gear showed up yesterday afternoon and looks like the right part. Not only that, it appears BRAND NEW--I figured I was buying salvage! Totaled less than $30 with freight and whatever markup my local guy takes. I"m ears deep in a couple other projects, but this should get installed shortly. Very excited. Thanks again for the tip on PartsDepot.
PS--Anyone have ideas on how to tell how old this drill is, or at least know the years they made an F with a fertilizer and grass box? There's definitely no painted numbers visible on it.