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I need to install my Skunk2 header but I'm not really sure what I'm doing.. I've done a lot of reading in other forums but I'm still confused about o2 sensors and defoulers. Everything I've read so far has been about the 8th generation si and I'm not sure whats different. So what exactly do I need to do to install these headers? Is there anything special that do i need to know? Any tips or tricks to make it easier? I'm fairly new to all this. Thanks for all the help.

-Tyler

 
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I'm gonna need to get motor mounts as well correct? or is the situation totally different on a 99?

 
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man open the hood, look in front of u u got a manifold exhaust, remove the 8 bolt that mounth to engine ( sometime u need to cut em and remove em with vicegrip(french word)) the get under vehicule remove the 2 spring bolt, remove the old manifold exhaust, buy a brand new gasket, put your new manifold exhaust, for the bolt on the head of the engine u need to tight em begining from the centerto the corner like this : 7531246 by passing from center to side ( hope u understand) and bolt on back the 2 spring bolt, should be ok.