So you are putting together a 68 BB nova? Is it an original BB car? They do reproduce a 68 BB shroud I think and think it is the same one for Camaro? Same with the top radiator hose. The bracket on top is 68 BB nova only and no one reproduces it. You need an original to duplicate it. The by bass hose should be the same for all 68 BB cars I also don't think that is 68 nova specific.
Here is the top bracket.