This may sound kinda stupid but will the horn from a saturn astra fit in a cobalt coupe?

 

I don't think it would be hard to make it fit.
I bet the Astra has a high and a low tone, whereas ours has just a single tone. I honestly don't think it would be that hard to just bolt it in where ours usually goes.

 

Where is the horn on our cars anyways?

 

i put a gmc envoy horn in my car...sounds manly and was easy as hell (30 min and 1 hole drilled)

 

Under the driver's side headlight, I believe. I'm pretty sure it's down under the headlight bracket and frame in that gap in front of the wheel well and behind the front fascia.