Tank sticker is the only reliable record of RPOs as delivered. Unfortunately, GM dumped/lost all of its own copies of original build orders from back when.
The NCRS can supply (to members) some limited information:
National Corvette Restorers Society is pleased to announce that it can now offer solely to its members, certain information contained in 1962 after number 6000 and through 1975 (with some limited data) Corvette Month Car Shipped Reports.
* Shipping Data Report Service (US$40)
* Document Validation Service (US$100)
However: "Unfortunately, the shipping report does not contain the vehicle options"
https://www.ncrs.org/services/historic-document-service.phpI do have a bit of the tank sticker from my 1970, but it looks like a charred relic from a fire. Would give forensics a challenge to decipher.