For me, the most important number for Bockwinkel is that 130. I'm not entirely sure there were 130 wrestling fans in the world that would have voted for him in a list like this five years ago, especially if we were going off of footage. I'm very happy with his placement. I thought he could have fallen at any point in the last day and a half, certainly.
As for 70s Bock, the answer is "not much." A lot of what we have is clipped. You can get a sense of him, one that mostly syncs up with the very complete later picture, but it's just a sense.
Just off the top of my head, there are some Bock/Stevens vs Crusher/Bruiser matches, some of a Verne match, some of a Ladd match, some of an Andre match, a lot of the match that made the High Flyers. As you get towards the end of the decade, you start to get Japanese footage, like Jumbo/Baba vs Nick/Lanza, and a couple of Jumbo matches. There is some IWE stuff from the end of the decade that I'm really looking forward to see. And you get spatterings of Memphis. Kevin could speak more at exactly what's out there.
Much of my case for Bock is that we have every bit of necessary footage in the 80s, in so many different situations where he had to be great to achieve different ends in different ways, that it's more than enough. Enough points to create a very detailed map.