So here is mine, I'm so glad I've found this paper as I have nothing else for the car, except the title and the manual. According to the paper and VIN, everything is on point.
1. Trim - 698 (Vinyl StratoBuckets - Optional Custom - Black)
2. Buick Model # - 49487 (Buick Riviera)
3. Paint: - 81 B (Sunset Silver Poly - Black Top)
4. Body No - 8236
5. A/C Manual Control - C60
6. Console, Floor shift - D55
7. LK-RR COM LID REMOT - A91 (Trunk remote open, maybe?)
8. Tinted Glass W/S - A02 (Tinted glass, except side windows)
9. Power Window ALL - A31
10. Seat Adjuster 4 Way Power - A46
11. Seat Assembly Front Bucket - A51
12. Body side molding - B84
13. Door Guard molding - B93
14. Vinly top - C08
15. Handle Assist - E28 (Not sure what is it)
16. Speaker RR All Loc - U80
Date: 08-22-68 (August 1st Week (08A))