The Wolves have been flirting with an Old Trafford appearance since the arrival of Tony Smith, but missed out last year despite topping the league table, as they were beaten by Leeds in the qualifying semi-final and in 2010, they lost at home to Huddersfield having finished third in the table.
Morley said: “It’s every club’s goal to reach Old Trafford and we’ve finally got there.
“We’ve been promising to make the Grand Final over a number of years, and particularly last year. That was the one that got away really.
“I’m delighted for everyone involved. We’ve got a good chance because we’ve been consistent all year.
“It’s helped that we’ve not had a great deal of injuries so we’ll go into the game confident, but Leeds have made a habit of winning here over the last decade or so.
“It’s all adding up to what’s hopefully going to be a great final.”
Morley, who played for Leeds in the first ever Super League Grand Final in 1998, appeared in three consecutive NRL Grand Finals for Sydney Roosters between 2002-04, winning the first against New Zealand Warriors.
He was also part of Bradford’s 2005 Super League winning team, having joined them on a short term contract for the end of season run-in.
The prop forward has made more than 150 appearances for Warrington since signing at the start of 2007.