Black and gold car was an L-78 under the hood.

The ZL1 Corvette pictured is not a prototype. It was a production car built late in the 1969 model year.

That black and gold one looks great.

https://s26.postimg.org/grxnxvdk9/download_1.jpg

• Tuxedo Black paint with Special Gold striping
• ZL-1 Street Detuned Engine
• Z22 Rally Sport
• M21 (M22 Optional) 4-spd manual or Heavy Duty M40 3-spd automatic transmission
• J52 Power Disc Brakes
• N40 Power Steering
• D55 Center Console
• U16 Tachometer
• F41 Special Performance Suspension
• ZN2 COPO 9567 Springs
• G80 Positraction (4.10 ratio w/M21 or 3.55 ratio w/M40)
• K85 61 Amp Generator
• K66 Transistor Ignition
• D80 Auxiliary Valance Panel
• Wider Front Bumper Valance Panel
• VE3 Special Front Bumper
• Racing Type Mirrors
• Exhaust Resonators
• Tail Pipe Extensions
• Special Steering Wheel
• F-70-15B Nylon Blackwall w/Gold Lettered Tires
• 15x7 Wheels
• Special Hub Caps & Wheel Nuts
• Wheel Trim Rings
• Special Striping, Decals for the Hood, Grille & Rear End Panel
• Wheel Opening Mouldings Deleted
• Special Instrument Cluster (for Transistor Ignition)

----Yes, that would be the original, Lee. Manufacturers plate and all!.......Bill S

LOL ... :) On the black and Gold car the factory ZL-1 "Street Detuned engine" was a 396 L-78.

the yellow Z/427 was said to have been built and driven by GM design boss Bill Mitchell

Interesting that the prototype deck lid stripes did not terminate under the spoiler like production Z/28 and Z10-Z11.

Look @ the chrome tailpipe extensions on the Yellow Car & the B&W photos of the black car.
They look like 1970 Chevelle SS..

Supposedly the Black & Gold COPO 9567 ZL-1 Special Camaros do exist - locked away in some warehouse that GM owns.There were two of them: one with an M21 and the other with an M40. No one has ever claimed to have seen them since the day those B & W photos were taken. That may be wishful thinking that they still do exist as opposed to having them sent to the crusher and destroyed which GM frequently did with it's prototypes.