Thanks for that link. I sure do miss that car. Ours was gold with the faux convertible top material. The cars style reminded me of Speed Racers car, I believe it was called the Mach 5.
Yep, that generation of Riviera is an absolute masterpiece. The YouTube channel guy considers it the most beautiful GM of the sixties and perhaps ever. Here he is giving a detailed walkthrough of his personal low mileage (~40k miles) all original ‘67 Riviera. He actually has several videos dedicated to the 66/67 model.
https://www.youtube.com/watch?v=iRF9vL12pMc