Joining Wallace and Hayes is their fellow 2006 Heineken Cup winner, John Kelly, who could be involved in a Munster matchday squad for the first time since injurying himself against Viadana in September.
The veteran utility back proved his fitness by scoring a try in Cork Constitution's AIB League Division One draw with Garryowen at Temple Hill last Saturday.
Another player who featured for Con against Garryowen, Denis Hurley, has also made the cut, while Shannon duo Donnacha Ryan and Niall Ronan will be hoping to force their way into the Munster 22 after both players impressed for Mick Galwey's side in recent weeks.
MUNSTER Squad (v Newport Gwent Dragons): Backs (12) - Denis Hurley, Shaun Payne, John Kelly, Ian Dowling, Brian Carney, Kieran Lewis, Lifeimi Mafi, Rua Tipoki, Paul Warwick, Ronan O'Gara, Gerry Hurley, Peter Stringer.
Forwards (14) - Marcus Horan, Federico Pucciariello, John Hayes, Tony Buckley, Frank Sheahan, Jerry Flannery, Mick O'Driscoll, Donncha O'Callaghan, Donnacha Ryan, Alan Quinlan, Denis Leamy, Anthony Foley, David Wallace, Niall Ronan.