I grew up in the Chicago area. In the late 60s early 70s Mr. Norms used to have ads on late night radio, sounded kinda like the loud, pounding dragstrip ads from that time period.
Norm also used to advertise regularly in the car mags, like the ad that's the subject of this post. I have a Jan. 72 copy of Super Stock & Drag Illustrated that has an ad for a supercharged 72 Demon GSS, for $3695. There is also a writeup about the Demon inside and it's on the cover as well.
If you want to see what one of these Demons looks like, go to the car show and event section on here and look at the thread for the MCACN 2017 show, there's a couple pictures of one.
