I had mentioned in an earlier entry that Sam McQuagg won the '66 Firecracker 400 in a Ray Fox Dodge Charger..........I did a little research on Sam & found that I was mistaken..........it was a Ray Nichels Dodge Charger & was Sam's only GN win. Another little tidbit of information I found on Sam McQuagg was thatduring practice for that race, he noticed that the rear of the car got very light above 180 mph & that he was actually spinning the rear tires going down the back straight, so he & his crew came up with the idea of adding a 1-1/2 inch metal strip across the rear of the car (the first rear spoiler).
In '66, they could be more innovative & there were no rules against this. Not only did this provide enough downforce to hold the rear end down but actually added another 5-6 mph in speed. Obviously, it worked very well (since they won the race) & according to the story, Sam is given credit for running the first rear spoiler on a stock car in a NASCAR race. Sadly, Sam passed away in January, 2009.
updated by @ernest-sutton: 12/05/16 04:02:07PM