1968/1969 Chevy 327 HN Engine Code

Hi,

I hope an expert can help me.

1) which chevy car models offered the HN engine coded 327 v8 in 1968 and 1969?
2) what was its horsepower?
3) what kind of transmission was it coupled to
4) are there any visible differences from the 1965 corvette HN coded 327 that had efi?

I really appreciate your help!

Thanks
Mike