I have also been collecting info on the ZL1 Corvettes. Besides the production yellow and white car I have found articles and pictures of Zora's white test mule that appears to be a 1968 body. A Monaco Orange ZL1 used by Chevy as a drag racing test car showed up in an article in Motor Trend Oct 69 called THE 10 SEC TRIP. An article in Sports Car Graphic Oct. 69 called GENERAL MOTORS MISSING MODEL YEAR shows two ZL1 Corvettes at a 1970 press preview. The photos are black and white but one car looks white with a wide stripe down the center and the other is a dark color. They may be the same 2 white and orange ZL1 test cars but were "fixed up" for the press preview because the 70 Corvettes were not there. Martyn Schorr (Cars magazine editor) has stated that he remembers a black ZL1 Corvette test car. There was also an interesting quote that was in some of the magazines supposedly from Zora when asked about the ZL1 Corvettes he said in using his dialect "Were six cars made. Two escaped. Four changed inside and sold to employees."
There was a guy selling a 68 L71 white Corvette with what he said was a prototype ZL1 stripe done by GM
here are some links
http://www.corvetteforum.net/c3/supe...Oct69/zl1a.jpg
http://www.sharkwerkes.com/sharktank...o/68proto.html
[Edited by JoeC (08-05-2001 at 12:07 PM).]