YA vs AO Wheels

[fpace]

I recently purchased a 70 Chevelle SS396 and am wondering if the wheels are original to the car. One wheel stamp shows 7 9 YA which I think means it was produced in July of 1969. The car is documented to have been assembled the first week of November 1969 at the Kansas City plant. Box 45 - Wheels of the build sheet show “5-AO”). From what I have read, some YA wheels were put on early 1970 production cars which this is. Is it possible these YA wheels where put on the car even though they don’t match the AO from the build sheet? Thanks,