The group hopes to convince colleagues to unite around Penny Mordaunt to lead the Conservatives into the general election battlefield.
A coronation for Ms Mordaunt as prime minister would be followed by a swathe of pledges to improve the Tories' chances on polling day.
Pressure is mounting on Mr Sunak ahead of what is expected to be a bruising set of local election results on Thursday.
The rebels' five-point plan includes curbing legal migration, cutting the benefits bill and offering junior doctors a 10% to 12% pay rise, boosting defence spending to 3% and toughening up sentencing.
A Tory source said: "The country has had enough of broken pledges and distant plans for change or bans they never asked for.
"It's a plan for 100 days to show the Government is taking action and cares about what matters to the British people the NHS, immigration, getting our economy going by getting people back into work quickly and making our country safer and more secure."
The rebel insider added: "No more tinkering, dithering or managerialism - these are policies that can be introduced in a few months and then go to the country for people to make a decision.
Denne historien er fra April 29, 2024-utgaven av Daily Express.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra April 29, 2024-utgaven av Daily Express.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
'I want the chance to prove myself again'
PEP GUARDIOLA feels the need to prove himself all over again-despite his glittering successes at Manchester City.
SEAN HAILS BRAVE CALL
SEAN DYCHE says Everton made a \"brave decision\" to reject Manchester United's £50million offer for Jarrad Branthwaite.
Howe looks to end Toon striking issue
EDDIE HOWE is banking on the competition between Alexander Isak and fit-again Callum Wilson to spark a faltering attack.
Iraola won't play it by the book
ANDONI IRAOLA admits Bournemouth will miss Antoine Semenyo but is happy to accept yellow cards as the price for the club's style of play.
McKenna refuses to rest on laurels and asks for more
KIERAN MCKENNA has warned Ipswich they must build on their improving Premier League form.
Davies sends Blades to top of pack
TOM DAVIES came off the bench to score a late winner as Sheffield United went top.
STAYING AT RED BULL IS TARGET FOR MAX LEGACY
Champion insists he does not need to win elsewhere
How Pope managed to get out of a Stew
OLLIE POPE revealed a heart-to-heart with his mentor Alec Stewart helped pave the way for his timely return to form against New Zealand.
Former intern fights boss for half his £1m company
AN antiques dealer to the stars is locked in a bitter court fight with a former intern who says she has a right to half of his £1million firm.
Highgrrrove's not too ruff for us...
MISSY the English cocker spaniel looks excited to be meeting a King Charles, but Percy the white bichon cross appears to have realised her mistake...