I currently own a 70 Challenger RT/SE with AC and no stripe. It was bought from the original owner. It has a bee on each rear window, I did replace them when I bought the car in 1989 but am sure it had 2. I really do not think it has an Air Temp sticker anywhere on it.
I also had a 70 Challenger RT in 1974 that had Air conditioning and a bumble bee rear end stripe. It had a bee on each window, I still have the glass, but I do not think it had an Air temp decal either.