I agree with Joe, I recommend a permanent mount for a winch that size.
Here are a couple photos of two different winch bumpers that I have tested on the Desert Tank. I tend to be pretty rough on equipment and I test and thrash this stuff to be stamped with the "Baja Proven" stamp of approval. Nothing like being on the beach 40 miles north of Scorpion Bay buried deep in the sand wondering how the hell you're gonna get out. :{
The purchase of the Reunel was a HUGE hit on my checking account because we went with Polished Stainless Steel, Bull Bars, and about every option Reunel offered including the big Warn Winch. However, there is no price a man wouldn't pay when stuck on the beach in the remote reaches of the Baja Peninsula. I've pulled myself out of the deep sand and mud too many times to admit to using this winch and a big Pull Pal.
The Reunel was installed by the factory boys in Yuba only a couple weeks after the purchase of the truck and served us well. Reunel's winch bumper is stout, heavy and serves the purpose. I've hit a small buck with the right front corner at 10:00 pm at night approaching the Canadian border in Idaho at about 55 mph and it simply didn't damage anything except the animal.
The bumper can double as a handy drink BAR when camped ,as many of my friends have utilized it as a conversation piece. The downsides of this bumper was only determined after about 125K miles of plying the off-road world. The bumper is HEAVY and blasting through the dirt of the SouthWest Deserts and the Baja Peninsula seemed to take its toll on the frame mounts. At one point the bumper bent down forward about 1. 5" inches from the pounding of the dirt rounds, bumps etc. The front end of the Dodge coupled with a big heavy Diesel motor and this heavy front bumper caused concern to continue running hard in the dirt. We removed the bumper and cleaned up the frame mounts fabricated a stronger mounting point and got back into the dirt only to have the bumper bend forward once again. On the street, in the snow, and under normal conditions the bumper worked great... however under serious off-road conditions we continued to see problems.
And then we came across the bumper that is still on the DesertTank after 275,000 miles. Off Road Tech, Inc. of Portland, Oregon fabricates a light weight (relative speaking in comparison to the Reunel) with a full winch mount including light mounts etc... This winch bumper was 50% the price of the Reunel and for our particular situation it was better situated. The ORT bumper has withstood the pounding of the desert, we believe because of the lesser weight, and provides us similar protection from front collision damage etc... We have used the bumper to assist abandoned vehicles from the dirt roads of the Baja Peninsula on a few occasions (in order to make travel safer for passing motorists).
Prerunning at the 2005 Baja 500 in the Desert Tank we launched the truck through some 3 foot high bumps and afterwards when we came to our senses I discovered that that particular flight through the air and subsequent landing also resulted in bending the ORT bumper down about 3/4" of an inch. A week later when we took apart the front bumper at Sage's shop, we later discovered the last couple inches of the frame were actually bent. He worked his magic and the latest tests on the bumper flying through the dirt has seemed to hold up well. The winch is mounted inside the bumper, but ORT gives you plenty of room to access the controls. I have utilized the winch WAY TOO many times while installed on both bumpers.
Seems my co-drivers always say... "Ahhh, just go for it - don't worry Oo. " and then I'm ten minutes later going :--) nothing like pulling out all the recovery gear instead of watching the sunset...
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