"I was impressed with our performance against Italy last weekend so I have given the bulk of the squad the chance to start again," said Street. "It was a tough call to decide who should start at scrum half but in this instance, La Toya just gets the nod.
"The only other changes are on the bench and it's great to welcome back a player of Kim's experience. She has 42 caps and is unlucky not to have played this season because of injury. We have definitely got an experienced bench who will bring a lot of firepower to our game."
Although England cannot defend their Grand Slam crown after defeats to Ireland and France this season, wins over Scotland and Italy means that England can still finish second in the Six Nations if they defeat Wales.
For Wales, this is also a massive game. They know that if they defeat England - something they've not done since 2009 - then they will qualify for the Rugby World Cup in 2014.
Street added: "There's a lot at stake for both teams on Sunday. Wales need no motivation to want to beat England but certainly qualifying for next year's Rugby World Cup is a massive goal for them.
"For us, we have got a lot to play for. We want to finish second in this year's championship and I think if we can do that without several of our big name, experienced players, then that's a good result in a challenging Six Nations year."
England team to face Wales
15 Lauren Cattell (Saracens)
14 Lydia Thompson (Worcester)
13 Abigail Chamberlain (Richmond)
12 Amber Reed (Bristol)
11 Sally Tuson (Bristol)
10 Ceri Large (Worcester)
9 La Toya Mason (Wasps) (VC)
1 Roz Crowley (Lichfield
2 Victoria Fleetwood (Lichfield)
3 Laura Keates (Worcester)
4 Joanna McGilchrist (Wasps)
5 Emily Braund (Lichfield)
6 Sarah Hunter (C) (Lichfield)
7 Hannah Gallagher (Saracens)
8 Harriet Millar-Mills (Lichfield)
16 Emma Croker (Richmond)
17 Rochelle Clark (Worcester)
18 Sophie Hemming (Bristol)
19 Tamara Taylor (Lichfield)
20 Rebecca Essex (Richmond)
21 Georgina Gulliver (Lichfield)
22 Kim Oliver (Bristol)
23 Emily Scott (Thurrock)