Clive Griffiths aims to engineer "the biggest shock since the sinking of the Titanic" as North Wales Crusaders face Wigan in the Challenge Cup.
The Wrexham outfit go into Sunday's fourth-round tie at the DW Stadium on the 100th anniversary of the loss of the famous cruise ship as the 1,000-1 outsiders to lift the Cup at Wembley but Griffiths says his side are undaunted by the size of their task.
"All my players are really looking forward to it," Griffiths said. "We know we're under the pump and it will be the biggest shock since Titanic sunk if we win.
"If we do sink the Titanic in Wigan on Sunday then we'll have more than done well."
The Crusaders, who rose from the ashes of the old Super League club, have already claimed a notable scalp by knocking out French club Toulouse in the third round.
"It's a fantastic occasion for our lads," said Griffiths. "It's one of the game's oldest clubs against the newest.
"I said after the Toulouse game that, if they won, then they could rub shoulders with the best in the world and that's now going to happen.
"It doesn't matter what the score is, it's about the occasion and the glamour of the Cup.
"It's like a lower League Two club going to Manchester United - people will be whisking us away in straitjackets if we say we're going to beat Wigan by 20 or 30 points.
"But funny things can happen and, as long as I get a good performance out of my lads, then I'll be satisfied with that."
Wigan assistant coach Iestyn Harris, who was in charge of the old Crusaders club, insists the holders will not be taking the part-timers lightly.
"Clive Griffiths is doing a great job there," he said.
"They are obviously in a lower division than us and that can sometimes make it slightly difficult but we will be making sure we give them the respect they deserve.
"The Crusaders have worked hard to get themselves where they are and we will make sure we are fully professional the way we go about the game.
"They have only been running for six months so it's a big ask for them to come to Wigan but we will be prepared."
Warrington, among the favourites to lift the trophy, take on Keighley at Cougar Park on Sunday and there are all-Super League ties at the KC Stadium, where Hull host Super League leaders Huddersfield, and Craven Park, where Hull KR meet Catalan Dragons.
