I saw that you got a hold of Guldstrand and got some good info.
Hard to say what it was originally, but from the dates, that owner probably didn't buy it new.
66 or 67 trans.
Gold car with white top. Black deluxe bench.
The axle code is located on the passenger side axle tube. Look under 'Decoding' on the CRG (
www.camaros.org) website for a great sketch of the location.