DEG Inquiry 41796 elaborates on modifications for replacement parts.

“Please reference the following information from the labor general information section of the procedure pages under Additions to labor time:
Rework Parts
To fit a particular year or model (example: cutting holes for lamps, modifying a radiator support).”

For example, 2024 Ford Bronco front bumper reinforcement may ay require “Drill Holes As Required, Shim As Needed” which can be found in the Ford OEM Parts Catalogue