Hull coach Lee Radford says back-to-back Wembley triumphs would establish his club among the game's elite.
An emphatic 43-24 victory over Leeds in Saturday's first Ladbrokes Challenge Cup semi-final has given Radford's men the chance to retain the trophy for the first time in the club's history.
And Radford says victory for his home-town club at Wembley on August 26 would help owner Adam Pearson realise his ambition of lifting the Black and Whites alongside the likes of Leeds, Wigan and St Helens as one of the modern greats.
"It would stamp us there with the big boys," Radford said. "That was always the goal when Adam came in.
"He was laughed at with some of the comments he made but it would cement us a spot right there with the elite teams in the league."
Radford said his side produced the near-perfect performance in their seven-try rout of the Rhinos at Doncaster's Keepmoat Stadium.
Hull will now attempt to put the Challenge Cup final on the back burner as they prepare for the start of the Super 8s and a bid for the elusive double.
Only four clubs - Wigan, Leeds, Bradford and St Helens - have won at Old Trafford in the 20 years of the Grand Final but Radford says his side are now on the brink of joining that exclusive club.
They reached a maiden Grand Final in 2006 only to disappoint against St Helens and fell short 12 months ago, losing to eventual winners Wigan in the semi-finals.
Top of the table going into their Wembley final with Warrington last August, Hull missed out on the League Leaders' Shield as part of a cup final hangover but captain Gareth Ellis insists they will be better for the experience.
"We've planned the season out a bit differently," Ellis said. "There's certainly a lot of improvement left in us.
"We were very happy to win the Challenge Cup last year but subconsciously there were some things we didn't do well and I'd like to think this year will be different."
Hull, who finished third at the end of the regular season, open their Super 8s campaign at home to Salford on Friday.
