You can check the anidb entries I posted for a full list of subbers for every series, but I don't think anyone ever finished subbing Ashita no Joe.

As for Generator Gawl, get a4e or Blitz subs. They both do a good job on a lot of older series...and look at that:
[a4e]Generator Gawl 1-12.
Seeding isn't that great, but that is pretty good for a series that aired in the late 90s which isn't an anime icon like NGE, Bebop, or Trigun.