The brackets were on the car but not the bumper. Look at the picture posted by A12. Do you see anything installed beneath the grill? Where is the valance section in that picture? As far as 70 compared to 71 assembly procedures, it is an apples to oranges comparison. Many procedures changed from model years to expedite the processes. If you try to use 71 characteristics to justify 70 procedures, we need to debate whether 71 fender gills should actually be installed in 70 Cuda fenders.