Test forward Pat Carrigan returns from suspension at lock, where Smoothy started last week in the 16-14 preliminary-final win over Penrith.
Broncos coach Michael Maguire has resisted the temptation to start 2023 grand-final hat-trick magician Mam at five-eighth after he returned from a seven-week hamstring lay-off last week in the win over the Panthers.
Ben Hunt has retained his No.6 position in the named side while Cory Paix stays at No.9.
Smoothy, 26, played in the 2023 grand-final loss to the Panthers and does offer more cover for Maguire. A hooker by trade, he can also play as a middle forward.
It was a tough call for Maguire with Smoothy leaving for Super League club Wakefield Trinity next season.
Talty, also 26, has been a revelation this year off the bench in his first season of NRL after previously toiling away at North Sydney Bears in the NSW Cup.
He arrived at the club on a train-and-trial deal mid-season and has been a key figure in the Broncos' stunning run to the decider, winning nine of the 10 matches he has played.
Talty, also 26, earned an upgrade to the top squad and a two-year extension.
Despite not making the cut for the playing 17, Talty was available at the Broncos media session on Monday where he spoke of his pride in what he and the club had achieved.
"It's such a good feeling and I'm so proud of the boys for what they have worked so hard for," he said.
"I was fortunate to become a part of this club halfway through the year and ... we're in a position to play in a grand final. The boys have worked so hard to be here.
"I really dialled into my off-season and gave myself the best possible opportunity in pre-season to make a mark.
"I just love being part of this club.
"To be where I am now when I was at North Sydney a few months ago, it's been a remarkable journey for me."
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