I have the "Pre-Delivery Service and Adjustment Check Sheet" that was passed along with my wife's 72 Supreme. I'm trying to decipher some of the info and it makes reference to an R.O. number which has a letter and five number, (ie G46779). I don't know if anyone is familiar with these "check sheets" My understanding it is the inspection check sheet used before the car leaves the dealer to the buyer. Any info?