There was a factory bracket, however, they were only installed in states that required a front plate at time of sale. If you take a look at the splash apron under the grille on the right hand side, you will se 2 holes. They will be behind the bumper, about 1/4" below the top edge. That is were the bracket will mount. New ones are available from the reproduction parts suppliers.
Thanks for the info. Can you point me in the right direction as I am not able to find a supplier.