If you do opt for a replacement pump, check to see how the cross pin is located. Some of them have the pin only held by being staked into the body, and they have been known to work loose with potentially disastrous results. (Don't recall who offhand, but someone had a broken camshaft that was traced to that pin coming loose.)
There was originally a cork seal for the sediment bowl, that tends to dry up and crack over time. The TRF kit contains a "rubber" seal that works quite well; or I'm sure you could cut one from some suitable sheet (being sure to use something that is compatible with both gasoline and ethanol).
The outlet fitting is another common leak point, because the original used a special compression sleeve that is NLA. Here is one solution
https://docs.google.com/viewer?a=v&p...z&hl=en_US. Others have had good luck adding some material (like valve stem packing) between the nut & sleeve. One of my first projects after buying an old lathe was to make a custom nut that better fits the modern sleeves.
Last I heard, the Moss kit did not include the shaft seal. Probably not important unless you are going racing (or autocrossing), but without it you can lose oil through the weep hole in hard right turns.