Your right, Tony was the first one to use it now that you mention it. You could be right about the GBP car having it first. The Surfers was the first car I remember it on, but that may because I followed them closer than the GBP car.
The Surfers actually come on the scene in 64 without Sorokin. They didn't accomplish much until he came onboard in 65.
But you're certainly right about T Nancy having before anybody else I can remember.
http://www.jalopyjournal.com/wp-cont.../12/drag1b.jpg