Why do you use hard line instead of a barbed fitting on 95-97?I dont understand.Dont the 95-97 camaros have the coolant lines in the same place on the throttle body.I know how it is on my car,but I just dont know how a 95-97 camaro is different.

 

You don't use either one. A "hard line" and a hose barb are virtually the same thing and used for the same purpose.
The steam pipe hose goes into the TB on the 95-97s. It goes straight to the radiator on the 93-94s. There are diagrams of both systems on my Tech Page.