Was RPO PL5 a mandatory option for the COPO cars?

[Keith Tedford]

I have GM of Canada info on one COPO Chevelle that came with PW7 white wall tires, the same as our L78 car. Most came with the PL5 white lettered tires (Uniroyal, Firestone etc.). The dealer charged us $2.75 extra for the G84 4:10 gears and listed them as option H05. The rearend housing is stamped KQ. They charged me $31.10 for a HD V01 rad which the car didn't have, just the regular 3 core unit. They didn't charge us for the U15 speed warning indicator which the car did have. I don't rely on their billing methods as an accurate method of determining what was part of the COPO package for obvious reasons.