Aluminum bumper brackets, a new offering

These look very nice!

Question- are they strong enough to be used with a steel bumpers? When I say strong enough, I mean to actually hold the bumper up, not their integrity in an accident.

It looks like there is a steel bumper in one of the pics you posted of them mocked up, but I could be mistaken. If they are indeed strong enough, I might be interested in a set of 71 duster fronts and 71 dart rears

Thanks