installing my header today and i cant get the damn center bolt off the stock header how the hell did u guys get it?

 

bump

 

Hopefully these threads help:

https://www.cobaltss.net/forums/how-...+header]Header
https://www.cobaltss.net/forums/how-...+header]Header
https://www.cobaltss.net/forums/how-...+header]Header

For the really hard to get ones you just need to get in there with a regular 13mm wrench instead of a socket. I don't remember the clearance on the stock manifold, but if you can get a 13mm flex head ratchet wrench in there that would be ideal.