This car is the Gold/Black '69 Phase III GT that was just sold at auction not long ago. It was the only GT that had the scoops on the side pillars because the customer wanted it that way.
It's no way a factory 70 ZL1. The GT was Joels design.
But if you're talking about this particular ZL1,
http://corvettes-musclecars.com/cgi-bin/...L-1%20427-430HP ..It's been said that GM copied the Motion paint scheme on this car
http://corvettes-musclecars.com/cgi-bin/...20427-430HP;i=1 ..and there IS also a Baldwin/Motion L88 Phase III Vette that looks identical to this factory ZL1 vette that was built for a customer. white/black stripe. ..Whether it was modeled after the ZL1 I don't know