I refer to that style of front bumper as the eyebrow style. They were installed on Panteras sold in Europe but were meant to incorporate the turn signal pods on the rubber bumper cars.
it appears you have removed your front light pods along with filling the bumper holes. What are your plans to incorporate driving and signal lights ?
The impact bumper was not required in Europe but they didn’t want to have to fuss with two different stampings for the front valance. Thus the eyebrow bumpers mounted above the light pods
I am not as familiar with the rear bumpers but I think they were also the European approach for the L model cars. I’m quite sure more than one vendor offers these both in fiberglass, I think finding them in metal is difficult.
Larry