I did a lot of looking on this subject because I have a 10k winch in my garage from my Wrangler. In the end, I fould that the best solution was to get a winch tray with a 2" receiver that I can attach when needed. Then, put a front receiver hitch on the RAM.
Do I like it? Not really but I wasn't going to drop a massive wad of cash on a new front bumper. There is no aftermarket, behind the bumper winch mount that I could find although there are a few that you could try and modify (power wagon, etc...).
Or, as a alternative, you could do this but it sticks out. You can add a bull bar for lights and such. But, it is all bolt on and would not offer protection other than small brush.