Manager James Fowler will give the duo until the last minute to prove their fitness, although Paul Burns and Mark Millar have been ruled out.
Fowler said: “We have done well against Rangers with a win in December and then the draw at Ibrox however they are a different team now.
“Rangers are now showing their quality consistently as opposed to earlier in the season. We are looking forward to the challenge and it should be a great game. Our need is just as great as Rangers’ as we need the three points to keep close to fourth place.”
Rangers captain Lee McCulloch begins a two-match ban after being sent off for elbowing Hearts’ Osman Sow during the 2-1 win at Ibrox last weekend.
Manager Stuart McCall has said that Ricky Foster and Steven Smith have been ruled out, while striker Jon Daly and midfielder Tom Walsh are also absentees.
Rangers will leapfrog Hibernian back into second place if they avoid defeat at Palmerston Park, while Queens will move into the play-off places themselves with victory.
McCall is keen to see his side extend their winning run to four games. He said: “We’ve got momentum just now. We’ve worked hard to get it.
“It’s one of those things Gordon Strachan says. You feel good about yourself and you go out and perform. But they are a good side, especially down there. We know how difficult it will be.”