I am selling my dual side exhaust exhaust because I am going a different route. It will bolt up to any of the stock cobalts.
Details- Stock resonator w/ 2.5" piping, custom Y pipe which splits off to 2 2" pipes with 2" cherry bombs and rectangle exhaust tips. U will get all the hardware needed to bolt this up to ur car, including hangers that u will have to bolt to ur chassis(no drilling required, uses pre existing holes).
$260 shipped if ur within 300 miles of me(Canada doest count).
If ur more than 300 miles it will be $275 shipped(Canada doesnt count).
Also I will be heading to NJ this weekend(15/16) so if there is somebody in NJ that wants this I will trade them this for their stock exhaust and cash.

Pix-
http://cobaltss.net/gallery/files/6/2/9/8/DualT007.jpg
http://cobaltss.net/gallery/files/6/2/9/8/DualT006.jpg
http://cobaltss.net/gallery/files/6/2/9/8/DualT005.jpg

Vids-
http://videos.streetfire.net/video/36eac215-02f7-4313-b00d-9a1201530ff3.htm
http://www.youtube.com/watch?v=PsNrr8Z_Wbo
http://www.youtube.com/watch?v=TbPKgVKoLjs

More pix and vids- http://www.cobaltss.net/forums/showthread.php?t=80258&highlight=dual+side+exhaust

I accept Paypal and cash ONLY. I ship UPS. Check out my feedback on eBay @ waterboy13-half.