When I bought the car in 1987 it still had the original tires on it and original spare never on the ground. Obviously the rears were worn a lot more than the fronts. I bought it from the original family. My car is a June built and I don't know when they started using the second design. I have a low mileage Ls6 that is a July built and it has all second design nuts on it. Does any one know when they started using the second design?
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1970 Z28 Citrus green CW 3:73 1970 Ls6 Cy 3:31 14K miles 1968 Biscayne L72 M22 952 actual miles. 1966 Biscayne L72 3:73 1966 Chevelle L78 M22 4:56
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