My guess would be the car is in fact a "real deal" ZL1. Back in 1976 I don't think cloning these cars was nowhere near as common as it is today, nor did it even probably exist. That is due in part to the popularity and rediculous prices of these cars today.
I think people forget that guys bought these cars back in the day to have fun with whether it was drag racing at the strip or street racing the car.. Many people either didn't care about future values of these cars or they just didn't think they would be worth what they are today..
Cool article and car!!
