I am considering buying a '68 Camaro that has a "chirping" sound coming from the back of the car, so I assume its coming from the exhaust. The noise is not heard front of the door or under the hood. Can anyone help me with what the noise could be? Could it be associated with a low idle miss in the carburetor? Thanks, Buzz

 

loose tail pipe? maybe a bird is sitting on the axle housing chirping.
get under the car touch, look and listen

 

Could be a lot of things but most likely a loose pipe or hanger somewhere squeaking or an exhaust leak.