Clearasil's Mr. Norms '68 Dart ??
I can't see the fine print, but my guess is similar to an earlier post- a 67 used in the ad, and if you won you received a 383 Dart tuned by Mr Norm, not necessarily a specific car painted with those stripes- just a guess.
I've heard so many different stories regarding Mr Norm and the 383 Dart- but the article from Feb 67 appears to clear it up.