Discarded Pearl's headrests

Headrests are designed not for relaxation, but for the avoidance of whiplash. My mother spent that much for a 1970 Chevelle.
 
Unexpectedly appealing appearance. Those of us cautioning about the danger do not seem to have the same apprehension with those operating the 1971 and earlier SL, or pre-1967 Corvette or Mustang.
 
Those vehicles were never equipped with them, hence they cannot be removed; it is a comparison of unlike entities. I own a 1965 Mustang in which I deliberately added lap belts.
 
Some individuals use motorbikes without helmets; some have lived, while others have perished. Each everyone has their own preferences. I favor headrests and seatbelts, but I am uncertain about the airbag in front of me, since they were not very advanced in the past.
 
Pearl seems aesthetically pleasing sans headrests. I navigated driving from the early 1960s through the 1980s mostly without seat belts, headrests, or airbags. If you appreciate it, pursue it.
 
I am curious about the impact on wind noise. Furthermore, does the presence of a wind deflector influence performance in the absence of headrests?