They may be going in as heavy favourites on Friday night, but the Swans know anything but a four-quarter performance could see them bounced out of the finals.

With six wins on the trot, North Melbourne is full of confidence and eager to produce an upset in enemy territory.

The inclusion of Brent Harvey only strengthening its chances.

“We were always prepared for North Melbourne to bring their best team up,” Swans’ veteran Adam Goodes said on Wednesday.

“With Boomer back in, that just makes that more clear now that they’ve got their best team coming to Sydney.

“You hear how confident the boys are down there at North Melbourne and they should be, because they’ve won the last six games.

“We’re just looking forward to them bringing their best and us bringing our best and we’ll see what happens.”

Looking back to Round 4, a game he missed due to injury, Goodes echoed the thoughts of team-mate Jarrad McVeigh in pointing out the Swans' improvement.

After booting just six goals for the day and falling by 43-points at the hands of Brad Scott’s team, the've won 17 of their last 19 games.

“I think anyone who has been watching the way we’ve played in the last 15 to 16 rounds would know we’re a different team (to Round 4) with the way that we play,” Goodes added.

“I think North Melbourne play differently as well.

“You’re talking about a game that’s happened nearly 18 rounds ago, so teams change, and I think the biggest thing for us is that we’re in good form, they’re in good form, and it’s going to be a cracking preliminary final at ANZ Stadium.”

Preparing for his 350th game, Goodes believes Sydney’s previous experience in cut-throat finals will provide a significant advantage.

“The thing we’ve got in our back pocket is that we have been here in the last couple of years and we know how to prepare and what to do to get ourselves right for the big clash on Friday night.

“We need to make sure we come all guns blazing, and we’ve had the week off, so there is no reason why we shouldn’t come out all guns blaring.”