Actually 74’s came with both shock mounted (8/73- approx 12/73) and standard (non shock) mounted front bumpers (~12/73-7/74). And those bumpers do not interchange, the bolt patterns for the brackets on the bumper are different. All ‘74 rear bumpers were shock mounted.
So you’ll need to specify whether that’s a shock mount front bumper or not, unless you get the crash reinforcement and brackets too…