Thanks Tony for pointig that out. So you are saying that
It could verrywell have been installed in the car at the factory, especialy when the owner was workng for GMs engineering department.The GM documentation does not show the rad however the rad is on the original bill of sale and so are the 4.88 gears. I wonder if that purchase order went to the COPO office for their aproval first???I am in the process of contacting the original owner. Just think,

could this car be the first 68 copo built in 4th week of Jan 68??
I will keep you posted.
Peter