I have 4460. It is what some are describing as a 72-1/2? It came with the crash bumpers.
The cars without these bumpers and with have two entirely different characters.
Aesthetically, I like the look of the black "crash bumpers" but don't appreciate the amount of weight they add to the car.
I still have my originals stored. I substituted fiberglass bumpers on the car.
The fiberglass front bumper is probably as good as keeping your sheet metal in front ding free. The rear is really almost a hologram of a bumper but it looks original to the car.
Exactly what the weight savings on the car is I can't say. I did not do a before and after but the number weights on the original bumpers with their "crash cylinders" hidden within the fenders was suggested that it is about a 200 pound addition? Maybe?
The thought that I had is that with certain changes to original components, it is possible to get the weight of the car down to 2,800 to 2,900 pounds. With 500 hp, that puts the potential performance level just about on par with something like the C8 Corvette which really is weighing in at something like 3,400 pounds.
Right or wrong, that was just my thought process on the bumper situation besides the fact that I like the look of them and that I feel I get how they derived and that "form follows function".
I'm into the blacked out trim look and not a dated chromed look. That's just me and frankly, what I've done is undoable in the future anyway. Not by me, but by the next owners?