bbcsportsWales start strong favourites to win a record-equalling eighth straight Six Nations match when England visit the Millennium Stadium on Saturday.
Wales coach Warren Gatland, whose side won 26-13 in Scotland last week, thinks England "regressed" in beating Italy.
But England forwards coach John Wells insists: "If we take the things we're doing on the training field to Cardiff, we'll give them a bloody good game.
"And if we're still in it at the end, we'll win it," he added.
Wales hope wing Shane Williams and number eight Andy Powell must pass fitness tests on Friday.
Williams sprained an ankle in the 26-13 win over Scotland on Sunday and Powell pulled up with a calf strain on Thursday
Skipper Ryan Jones returns at flanker after being passed fit following a calf injury, taking over from Dafydd Jones.
England have restored fit-again Mike Tindall at outside centre while Joe Worsley makes a rare appearance at open-side flanker.
While Gatland believes England are "not looking to play pretty rugby or be positive", he has warned Wales fans not to expect his side's overwhelming favouritism to produce a one-sided victory.
"Having your backs to the wall is often the best motivation for a side," he said.
"England would like nothing better than to come here, sneak a win, stick two fingers to us and the rest of the world and then jump on the bus back home.
"They're coming here with not much to lose whereas we've got a fair bit to lose. If the Welsh public think we've just got to turn up, then Test rugby is just not like that."
Gatland believes England began Johnson's reign by attempting to play with some width, but that poor displays against Australia, New Zealand and South Africa were followed by a more conservative approach against Italy.
"It seems to me they've regressed a little bit since then [the autumn]," said Gatland. "They've shut up shop. They're trying to get a win no matter how they do it.
"There's nothing wrong with that approach. If you play negative rugby and win, well, that's what Test rugby is about."
Johnson admits England became bogged down against the Azzurri and must dig deep in Cardiff.
"We won the last game, and I would like to keep our fortunes heading in the same direction," he said. "We need to build confidence and momentum.
"We know as a squad we can play better than we did last week. It is about improving.
"I am looking forward to going away from home, and the pressure and intensity will be a big test for our team.
"The Welsh enjoy having a successful rugby team and they are playing some attractive rugby - so it will be doubly difficult.
"We don't have that much expectation - and we need to go there and fight. We can also play - but we need to battle and quieten the crowd down."
:wales: Lee Byrne; Leigh Halfpenny, Tom Shanklin, Jamie Roberts, Shane Williams; Stephen Jones, Mike Phillips; Gethin Jenkins, Matthew Rees, Adam Jones, Ian Gough, Alun-Wyn Jones, Ryan Jones (captain), Martyn Williams, Andy Powell.
Replacements: Huw Bennett, John Yapp, Luke Charteris, Dafydd Jones, Dwayne Peel, James Hook, Andrew Bishop.
:england: Delon Armitage; Paul Sackey, Mike Tindall, Riki Flutey, Mark Cueto; Andy Goode, Harry Ellis; Andrew Sheridan, Lee Mears, Phil Vickery, Steve Borthwick (captain), Nick Kennedy, James Haskell, Joe Worsley, Nick Easter.
Replacements: Dylan Hartley, Julian White, Tom Croft, Luke Narraway, Paul Hodgson, Toby Flood, Mathew Tait.
Referee: Jonathan Kaplan

'Mon the :wales:
:Jimmie O':