This topic came up about a month ago and I posted these photos then.
If you want to add more weight to your front bumper you could make up a set of braces that go from the top of the bumper to the axle.
These would make the carrying capacity of your bumper much greater and would not be difficult to fabricate. Notice they install on the back side of the axle.
Ford made front bumper weights for the later style bumpers and made the braces to help carry them. The weights were 100 lbs each and you could use up to 4 of them.
Thanks to Jim UT for these photos.