Frank Simek rates Carlisle's 4-0 win over Huddersfield in the Johnstone's Paint Trophy as their best display of the season.
But the American insists he will not start dreaming about his first trip to Wembley until after the second leg of their northern area final at the Galpharm Stadium on February 8.
Simek said: "I think that was probably our best performance of the season. Every individual won their battle all over the pitch and we all worked really hard.
"The second leg won't be a formality because they have quality in every area but we know that if we play in the same kind of way then we're going to give ourselves a real chance.
"The manager won't let us take anything for granted. We're one step away from Wembley and that would be a huge experience.
"I've never played there, so to get there would be unbelievable. Huddersfield is a tough place to go, though, so we'll have to do that right before we can even think about it."