[black69]

I see this car as a potential pilot of the ZL2 hood <span style="font-style: italic">at best</span>, only because there is 'no registration' history, and its a November build. A ZL2 hood system to me, has a lot more new parts to be verified (aircleaner base, the hood ducting, water testing for leaks into air cleaner, coil bracket is new, etc).

The owner of this car is stretching a potential ZL2 test vehicle into a COPO car. Would GM really have to do a pilot run to upgrade how they build an L78? The block is the same from a fitment perspective. The single fuel line is already there. Curved neck radiator already existed due to the BB air cars. Speedometer could be different (big deal, I think special speedometers were done before on earlier cars). Rear end is different but not that different (its just more heavy duty). I think the top end of the 427 COPO is also the same as an L78. Thus, there is no rationale to make a COPO pilot to me, especially with such limited production. Pilot runs make sense if you are going to make ALOT of something.

There is way more work in my opinion in getting any potential bugs out of the ZL-2 option and all of its new parts that has to work on small blocks <span style="font-weight: bold">and</span> big blocks.

But without no stamps on parts, or certain variations in a part, its all speculation.

Even if it was a ZL-2 pilot, its not worth anything extra.