Many of the issues were worked out during the production run and by 1964, early F-105Ds were upgraded with these fixes under Project Look Alike, although engine failures and fuel system problems persisted until 1967.
Sok problémát megoldottak a gyártás során, majd 1964-re a korai F–105D-ket a Look Alike projekt keretében feljavították, habár hajtóműhibák és az üzemanyagrendszer problémái megmaradtak egészen 1967-ig.