I can't find heavy duty bumper options for RamVans. You know, the kind that supports a winch and LED lights.

Will ones intended for a 1991 Dodge Truck work?

 

Probably not. The truck actually has a full frame. The van is likely unibody. Best bet would be a mount that plugs into your 2" receiver hitch.

 

Sorry, meant "front-bumper". I see ~1" x 1" square cut-outs in the frame about 1ft from the front that I thought may be for mounting.

 

Just read it is a uni-body design with two full length U-Channels. Does that mean no big front bumper?

 

I have seen some pretty significant bumpers hung off the front of vans....... No clue where you would get one though.

 

I took a universal truck hitch and installed it on the front of a 1987 Ford E-150. With that hitch you could remove the side plates and flip them either way to adjust for the width of the frame horns. I also cut the rear portion of the mounts off to avoid the centre link and installed some rectangular tubing in behind the bumper to stiffen things up.

Look at the 2005 through 2010 Jeep Grand Cherokee WK factory rear hitches. You could probably make something with one of them without creating a monstrosity. They just hang down and have 4 or 5 through bolts holding them on.