I have hush power 2 shorties by Flowmaster, they sound sweet and no resonating in the cabin. I have a pair of them so one might be a little louder. They will fit, with some nice tip as the body is only 12". They sell them in two flavors of stainless.

 

I like it. I currently have a MAGNAFLOW muffler on my HHR SS but in regretting it now, on WOT it sounds like a air compressor idk if its the muffler that's faulty or maybe the particular MAGNAFLOW muffler model doesn't agree with the engine, either way I'm gonna switch to a delete. I like loud and I like this sound. I wish I would have done it before spending 150 on the MAGNAFLOW. But live and learn. Ill probably have it put on my girls LT

 

Yup. I will be running a dump exhaust soon, and since it will be under 4 feet, will have "race" muffler:) btw really enjoy the hhr mufflerless!

 

Awesome and yes I'm really impressed with the sound. And for 20 bucks can't get any better

 

What did you do to get that great looking dual exaust on your HHR?
Looks like a modified stock SS. How did you make the filler under the pipes?

We would apreceate more pics and info