That's about the first time I've seen giant haystacks where he was much slimmer compared to the size he was in later years. Yet they still bill haystacks as 31 stone (434 lbs) and 6 ft 11 (realistically about 6 ft 5 tops). He must have been about 61 stone (over 800lbs) stone then in later life as he was more than twice that size in the vid easily.
And here he is in the 80's giving a reporter a Dave Schultz.