I did this several years ago with 2 extra hooks like what came on the front of my 4runner. I bolted the 2 hooks together making sure the bolt holes were aligned. Then I turned the heat all the way up on the MIG and welded then together. Next was opening up the hole farthest from the hook with a 5/8" drill bit. I added some rubber to either side just to keep it from making noise over every bump.
they're nearly the perfect width for a 2" receiver - just a hair wider would be better, so the cross pin is completely in shear instead of a bit of bend, but I've never had any issue with the cross pin anyway