I think the Demello and the All-Pro bumpers were designed withe the Warn M8000 in mind, though any regular sized, Warn mounting pattern (most winches), with an external solenoid should fit without too much trouble.
I have a Harbor Freight 10k in my All-Pro bumper. I had to cut the access hole open a little bit wider so the bar across the top of the winch would fit. Maybe 2 inches wider total, 1 inch on each side. It's been fine anytime I've used it (except the once when the power came disconnected).
That Superwinch that Brandon tried linked too (
Amazon) wouldn't fit in either the Demello or the All-Pro bumpers because the solenoid is integrated.