Help -- Service Manual for 1973 337G

[Ernie Martin]

I'm having trouble finding the right manual for my 1973 normally aspirated 337G, S/N 1501. Two companies have told me they have a 1965-1973 manual and then a 1974-1977 manual. The first one (notwithstanding what the front page says) only covers thru S/N 1462, which is a 337F. The second one starts with 1974 337G S/N 1551. That leaves the 1973 G model (from S/N 1463 to 1550) uncovered. Any ideas?

Ernie