Stop in for a cup of coffee

B body question, were disc brakes offered as an option in 1966?
I say negative.

In the dealer catalog, the first mention of disc brakes was in 68.

Before that, never any mention, all they would say I self adjusting brakes which are drums or it would specify HD drums.

I can recall seeing a number of 66/7 HEMI cars with drums all around

68_Belvedere0020.jpg