Contrary to popular belief many of the z11’s were delivered with a heater. I have photo documentation that Hayden Proffitt’s car came with a heater and it was delivered to so cal. The Bruder Chevrolet z11 also came with a heater and was featured in hot rod magazine as a test car. Here’s a pic of that car as delivered.
I’m pretty sure my Dads car came with a heater! I remember my Mom complaining to my Dad that she wanted her scales back and my dad talking about them taking things out of the car!