With nine of the Blues squad involved in the Wales Six Nations squad, Davies has made a number of changes to the side that beat Sale Sharks in the Heineken Cup last Saturday.
Jason Tovey comes in at fullback, Owen Williams moves to the wing meaning there is a new centre partnership of Gavin Evans and Dafydd Hewitt.
Harry Robinson remains on the left wing but there is a new halfback partnership with Ceri Sweeney linking up with Lewis Jones.
There is almost a totally new pack with prop Sam Hobbs the only player from the starting line up from last Saturday's match.
Davies said: "The match against the Sale Sharks was a game where we were able to field a full Welsh qualified team.
"It shows that our Academy system is working well as it has done for a number of years.
"It has produced some of the best players in Europe with the likes of Jamie Roberts, Alex Cuthbert and Leigh Halfpenny.
"There is a new crop of youngsters who have come through which is fantastic and it's exciting to see these young players develop, and they will have an opportunity to show what they can do on Sunday."