It has been a long time since I took a ride in a 58 Biscayne or Yeoman but that dash looks too nice. The one thing you could always count on Chevy back in the day was that the lower trim models would have the cheapest looking interiors possible.
You are correct about the level of interior trim. My Yeoman came without radio, clock or interior courtesy lights. My door panels do not have armrests. It's a 235 with a 2 speed automatic. The car was ordered with armstrong steering and manual brakes. The car was to be used in a rural, mountainous area so the original owner ordered a posi.