The 2008+ is different (the coolant routing is different). The same header fits the 2.0/2.4/2.2 (2008+). The other part number only fits the 2.2L 2007 and older.

Maybe the Pacesetter fits all the 2.2s because it comes out so far before it slopes down, but in order to be a direct bolt on with no welding there has to be 2 different part numbers for the 2.2s.

 

What about this header:

http://cgi.ebay.com/ebaymotors/OBX-R...A1%7C72%3A1171

You'll also get a downpipe. I'm leaning towards this one for myself.

 

I would be concerned about warranty. They don't really mention it in the write-up. And would you need to cut into the downpipe they provide? I have no idea how to weld so that would be an important question for me.

 

Get a used LSJ header, i run one. It has significantly less restriction then the stock header which was horrific looking and had tons of dents.

 

obx is a good brand i've had good experience with their cobalt products