The Elland Road outfit are one of the division's form sides - but even they can't match the Magpies' run of eight straight wins in all competitions.However, former Swansea boss Monk believes a sold-out stadium could give Leeds an advantage against Rafa Benitez's men.Leeds have climbed to sixth in the Sky Bet Championship table after three league wins in a row.But, speaking to LUTV, Monk said: "On paper this will be the toughest test of the season."They are top of the league, which means they have been the best team so far."They have high calibre players and a high calibre manager, they have the most expensive team in the league, so you would expect them to be where they are."Monk, who is without Pablo Hernandez and former Sunderland midfielder Liam Bridcutt, added: "Our approach is no different, our job is to give 100 per cent and try and put our best football on the pitch and we know that when we do that we can fight for a result."We have a capacity crowd ready to support the team, we want to send people home happy and we are going out there determined to win the game."