Mark Warburton says Leeds United are a different side to the one Brentford beat back in September.
Goals from Jota and Alan McCormack earned the Bees a 2-0 victory at Griffin Park as Darko Milanic endured a difficult start as United boss.
However, the Slovenian was axed just a month later, with Neil Redfearn restored to the top job on a permanent basis.
Brentford travel to Elland Road on Saturday hoping to get their promotion push back on track, but Warburton has warned Leeds are a tough nut to crack under their new boss.
"They've got a different manager since then," said the Bees chief. "All testament to Neil, he knows the club inside out and has done an outstanding job.
"After lots of upheaval and turmoil they have come through it. They've had two good victories against Huddersfield and Bournemouth. They are playing with energy and confidence at the moment.
"It is a tough place to go against a big club, but we're not playing their history. We're playing the 11 on the pitch.
"We have shown we're a good team, so we will try and negate the threat and try and impose ourselves. If our standards slip we will get hurt."
Lewis Macleod, Alan Judge, Alan McCormack and Scott Hogan miss out again.