Most people that are aware of "pilot cars," understand that there are different "levels." That is from pure one off prototypes to actual initial production cars built to test the production cycle. I would imagine that even with the L78 being another BB Camaro, there was a certain amount of engineering that was done in Flint vs. Norwood or Van Nuys...Also while any engine changes..L78 to LS6 for instance was just a larger engine, there was still a fair amount of engineering that needed to go into the cars, hence why they went to GM people..executives, zone reps, etc. They were people that could provide "real world," feedback..hence my car was a demo for a service zone rep. In regards to the LS6 program, there were certainly cars built using what would have amounted to crate LS6 engines...the Motor Trend test car being an obivious one. These cars, were built using SS396 cars and built more than likely in Sept./Oct 1969, would be the "truest" "pilot cars," as they were prototypes. My car is a "production pilot car," since it was not scrapped and was actually retailed. It would have been used to check both line quality and production/engineering quality of the "finished" product. GM wouldn't have actually allowed the prototypes to be sold as there would have been too many liability issues. I would imagine that there are other "production pilots," out there for the other plants, but again it is possible given Baltimore's importance in the "A" body program (Z16's, COPO's)that Baltimore was used as the "testbed" for production, and other "production pilots" weren't constructed.