74 Duster
Your ‘74 Duster could have two different styles of bumper mounting. For a period of time during the ‘74 production run they came with ‘73 style mounts to the front sub frame rail and then shock absorber style mounts which continued in ‘75 and ‘76. The inner bumper bracing is different and someone else could chime in if that inner bracing mounts to the bumper differently. It might not be as simple as looking for a new chrome piece from from ‘73 to ‘76 and resusing your inner bracing (assuming it’s still good).