Both artists have been added to the Balado billing, both playing on the Sunday before headliners Green Day and Travis.
Already announced to perform are Saturday headliners Foo Fighters, as well as Keane, The Killers, Embrace, Prodigy, Audioslave, and Razorlight.
CLICK HERE for more, with others to be confirmed over the coming weeks.
T in the Park 2005 takes place at Balado, Kinross, Scotland on 9-10 July. The event is completely sold out.