TOPIC:

I am in Europe (UK) Katit. The green 650 b1 in my footer I bought new out the crate in 77. When I bought it was the only 650 model available on the market worldwide. I still own it. B1 Was designated a 1977 model but production started mid 1976. B2 was a 1978 model with production started in Sept 1977.
So if op's bike is dated 76 it can only be a B1 with a B2 front end. 

I am confused. He said 78 in his first post

Your not wrong!!!! . bit embarrassing, not sure why I thought he said it was 76? I'm blaming Mr Jack Daniels! 
Sorry Joerg 

Confusing isn't it. In the European car world the next model year production starts in August. This is because they re-tool during the "summer shut down" (last two weeks of July ) 

That's why you can never get a sun lounger in July (UK joke aimed at our German friends - no offence intended  )

Welcome. Nice 650!
1977 and 1978 B and C models (B1, B2, C1 & C2) in Canada have front foot pegs mounted with only one bolt and no rubber mounting.
Canadian models were made in Japan.