Kevin,
Not positive, but I think the one smog pump bracket on the left is for b/b. I'm going from memory, but I think the back part on mine is more trapazoidal like that one, rather than curved like the one on the right. However, I don't remember any holes in the bottom. I'll check when I get home tonight. Whichever is correct, it was the same for several years. The alternator bracket on the right is a b/b for sure. It was a 69 only as it had the insert spacer for the smog bolt. Later years had an offset stamped into the bracket similar to the s/b alternator bracket on the left.
You didn't ask, but b/b smog bracket=$25-35. b/b alternator bracket= $60-80.
Not positive, but I think the one smog pump bracket on the left is for b/b. I'm going from memory, but I think the back part on mine is more trapazoidal like that one, rather than curved like the one on the right. However, I don't remember any holes in the bottom. I'll check when I get home tonight. Whichever is correct, it was the same for several years. The alternator bracket on the right is a b/b for sure. It was a 69 only as it had the insert spacer for the smog bolt. Later years had an offset stamped into the bracket similar to the s/b alternator bracket on the left.
You didn't ask, but b/b smog bracket=$25-35. b/b alternator bracket= $60-80.