I have GM of Canada information on several COPO Chevelles. ZP2 doesn't show up on any of them. Must be a little on the uncommon side. ZP1, ZP3, and ZP8 show up on some. Back in '88 when I had our Chevelle documented, the GM guys didn't seem to know anything about any of the Zxx codes. They just left them out of the documentation. The shipping list showed ZP8, ZV6 and ZN1 for our car. Some of the eagle eyes here have figured out some of them.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.
