You may try reaching out to Tad...iirc he was making/selling beefy bumper brackets.
On the 77 I had way back when(with a factory warn setup) the stock brackets were pretty wimpy.
Tagged a full size chevy van one winter ~15MPH and the whole driver side corner of bumper just caved into the fender.
We were able to pull it back out using a chain & tree.
Metal Twister built a very nice bumper as well...might try him as well?