It attaches directly to the frame using pre drilled holes. They make one for a plastic bumper and a separate one for a steel bumper. No change in temperature since I put it on about 4500 miles ago. I’ve had the same setup on my last 2 jeeps without any issues.
https://www.jeepgladiatorforum.com/forum/threads/winch-and-mounting-plate.86978/page-2

