The Mariners hopes of a first championship triumph in their third decider rest largely on the Amini's young shoulders after Argentine playmaker Patricio Perez was ruled out with injury on
Saturday.
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A two centimetre hamstring tear sustained in the 1-0 preliminary final win over Gold Coast has robbed the underdogs of their marquee import.
Central Coast coach Graham Arnold said he gave Perez, who underwent around the clock treatment, as much time as he could but never got close to playing.
"That's a blow, unfortunately (Perez) didn't recover in time but I've got all the faith in the world in young Musti," Arnold said.
"We tried to give him as much time as we could but he wasn't really a chance."
Amini has ably filled in for Perez several times this season but the Sydney-born son of an Afghani father and Nicaraguan mother must step up under the pressure of the occasion, the physical presence of Roar enforcer Erik Paartalu and a parochial capacity Brisbane crowd of 52,000.
Amini will have 'no problems'
It's a challenge Mariners skipper Alex Wilkinson believes the laidback, afro-haired talent will take in his stride.
"He'll have no problems," said Wilkinson, one of three Coast players to have appeared in the clubs two grand final losses in 2005-06 and 2007-08.
"He doesn't get flustered at all by any means.
"In a season where he probably didn't expect to play that much, and to get thrust in to start half a dozen games he's coped with that brilliantly.
"Nothing fazes him and he loves a laugh and loves a joke, he'll be fine tomorrow."
It will be Amini's 11th start in his debut season, which has featured 22 appearances and promised an exciting future.
Despite the huge loss of Perez, Brisbane coach Ange Postecoglou played down the Roar's advantage as they look to continue their record 27-match unbeaten streak with a maiden grand final win.
"There's no doubt he's (Perez) a quality player but the strength of both teams really is in the systems they play," Postecoglou said.
"Obviously he would have been a threat if he was out there but it's more the collective that you have to respect and I don't think it will affect their performance."
The home side will be at full strength with slippery striker Henrique shrugging off a quad strain to take his place on the bench.
The Roar have lost only once this season, a 3-0 defeat in week five to Melbourne Victory, and have dominated the Mariners with three wins and two draws in their five meetings.
Roar vice-captain Shane Steffanuto denied the Brisbane camp would be distracted by the timing of reports the Victory were set to target Postecoglou as their next coach after sacking Ernie Merrick.
Steffanuto was adamant the A-Leagues coach of the year would stay in Brisbane for the long haul.
"He's about us being successful and continuing to be successful," the defender said.
"The timing of the Victory's announcement has nothing to do with us and we've got a big game tomorrow and we'll handle it professionally and we won't let that distract us."
