soundjunky

iTrader: (4)

Just checking to see if the catback exhaust from one will fit the other.

I would love to hear from anyone who has knowledge on this.

I would suspect they would interchange as I had though the floors and rear axles were the same.

blu3_v1p3r

iTrader: (6)

Could be wrong but I think the hangers are different between the HHR and Cobalt.

soundjunky

iTrader: (4)

I know that the mufflers were different;
The cobalts had a rolled tip end, while the HHR did not.

I had not paid too much attention to the HHR when they were new, now they are few and far between.