I have noticed a few HHR's with GM Performance Badges located in several locations on the vehicle. Wherem can you get them?

 

Those are on the SS models. Google GM Performance Badge, you'll see they are available, even on Amazon, first search result.

 

If you're talking about the badge below, I believe that all the SS's came with just one.
I moved mine to it's present spot and mounted it with some small stainless screws. I didn't trust the double sided tape to keep it attached to the former spot. Arrow 2 is where it was from the factory.

 

I bought an extra on EBay and drilled a hole in it for a key ring.

 

GM part number 15826444


http://www.gmpartsdirect.com/oe-gm/15826444

Or in Amazon.

Gm Performance Division Emblem Large https://www.amazon.com/dp/B00D98D7NM..._5kJHybV4QC20B

Gm Performance Division Emblem Small https://www.amazon.com/dp/B00D98D6ME..._bmJHybNMPC6B5