Re: option codes
The information that I have on COPO cars holds true for the relationship of drive shaft codes to transmissions as well. Where I have complete information, ZN1 shows up every time. (KQ rearend probably).
Regarding ZP1 COPO tires, not all cars show this code. Ours doesn't and came new with PL5 F70 X 14 Uniroyal white lettered tires. Others with PL5 do show ZN1. A friend's COPO came with Firestone raised white letter tires. Our L78 car came with PW7 F70 X 14 white stripe tires. Question is, what is an L78 tire? Was there anything special? They seem to be the only difference between a 9562EA and 9566AA COPO Chevelle.
Some build sheets show the Zxx codes and some don't. I'm wondering if the shipping lists perhaps did the same thing, leaving things out from time to time.
More parts to the puzzle or more questions?
[Edited by Keith Tedford (01-05-2002 at 10:28 PM).]
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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. 
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