Can anyone tell me if any 67 chevelles came from the factory with air shocks?Thanks.

Sure! They were not common, but they did sell more than a few. They were RPO code G66. An error that people sometimes made was to jack the car up with lots of pressure to clear big wheels & tires. The problem is you could bend the crossmember if you overdid it.

All 67 El Caminos came standard with Superlift air shocks and they were optional (as mentioned) for all others. According to my figures, only 1885 Chevelle owners ordered them under RPO G66.

how about for 66