Well the ad says "believed to be 1 of 200 Biscaynes built" which if you believe it, it will be. Being a Canadian car and having GM of Canada documentation, it maybe could tell how many. I'm not familiar with what those documents reveal. It would be nice if they were posted with the pictures. Canada kept track of things. GM in the US apparently didn't keep track since there hasn't been any documentation found to tell us anything different except that 1,856 L72 full size 1966 Chevrolet cars were factory built. I don't know if that includes the export cars or not. I have some docs at home, I'll have to check. That total includes the Biscayne, Belair, Impala, Impala SS, and Caprice. Oh and don't forget wagons thrown in there too. Between all those models,
. Maybe one day somebody will find a secret stash of paperwork and bring it to light, so there's no more guessing. There have been a few '66 L72 cars come to light lately that I know of and they've been sitting for a while. All appear to have born with components and a few with the POP. Maybe there's a few others lurking in the shadows.
I had trouble with the link you posted. If anybody else does click this:
http://www.legendarymotorcar.com/inv...ayne-1698.aspx