In the play-offs' 33-year history, no second-tier team has reached the final having lost a first leg by two goals.
"We understand the challenge in front of us, but the barriers are there to be broken down," said Harris.
"Records are always there to be broken in all sports, not just football, and they continue to get broken.
"That's our task in front of us and we're not going to shy away from that task. We're not frightened. We look forward to the challenge."
Match Officials:
Referee: PAUL TIERNEY
Assistants: Ian Hussin and Darren Cann
Fourth Official : Graham Scott