Ya know, I tend to agree. At least some cars.
I have an Aston that has a great sound system. I rarely use it. Whomever designed the exhaust on these, my gosh, the person had "an ear" for it.
My '51 (which was very original when I got it) had suppression condensers on the generator and oil pressure sender, as well as some kind of weird black cylindrical "thingy" in the coil wire. Surprisingly, it was a factory "radio delete" car, complete with "blank-off plates" and all.