The Eagles have been strongly liked with Reading midfielder Kebe and Huddersfield full back Hunt and, following the 3-1 victory over Sunderland on Saturday afternoon, Holloway confirmed that the duo are set to move to Selhurst Park.
He told Sky Sports: "The chairman and I have been working so hard to bring some more people in.
"I think we've got two done today [Saturday], hopefully we'll get another three or four done."
When asked to confirm who the two he was referring to were, Holloway responded: "Jack Hunt, right-back, and Jimmy Kebe."
He added: "We need to get some strength in depth to help these boys and I won't block up the youth either because to see Jonny Williams and Stuey O'Keefe coming on, that's the Palace way really."
On the pitch Danny Gabbidon opened the scoring in the ninth minute but Steven Fletcher levelled just after the hour.
O'Shea was sent off for a foul on Jason Puncheon in the box with Dwight Gayle netting the resulting penalty before Stuart O'Keefe completed the scoring.
The win was Palace's first since their return to the top flight and Holloway thought his team got what they deserved from some encouraging performances thus far against Tottenham and Stoke.
"It feels fantastic," he said. "I thought we showed great character and no mean skill as well. I was really pleased with the overall performance.
"I thought we gave a great account of ourselves against Tottenham the first game, they can rip people to shreds.
"Against Stoke in the first half we were as good as that. Second half we made a couple of mistakes and got slaughtered for it.
"The lads have come back fighting and buzzing.
"If you look at (Marouane) Chamakh's effort today [Saturday], he proves to everybody that he wants to work for us and he's not even fit yet.
"Obviously I'm absolutely delighted for the boys, we thoroughly deserved it."
Black Cats boss Paolo Di Canio was disappointed with his team's defending and wants a change in attitude from his players.
"When you consider the goals we conceded today [Saturday], it's obvious you can't be happy and there is a job to do because in terms of the football, we were on top for long periods during the game and this is why I am not worried," he said.
"But if my players individually are going to concede a goal like we did today [Saturday] so we have to be worried."
He added: "It was a penalty but I am not sure about the red card because the ball was not in the Crystal Palace player's feet.
"The penalty came from a far more dangerous situation.
"We didn't react how we should and that is terrible because this game is crucial for us, for everybody, it can determine the outcome of our season
"If we don't start thinking that every goal, every challenge, can be crucial for the match that can be a problem."