Hello - I am replacing my stock exhaust manifold, stock cat and stock exhaust with a greddy header, USDM omni testpipe and Apexi WS2 exhaust and have some questions.

1) I plan on unbolting the stuff at the header and undoing hangers and 02 sensors and removing the whole system as 1 piece - Is this possible even or would it be easier to do part by part.

2) Do I need to replace the bolts with the factory spring type bolts and nuts? I havent got the apexi yet, so I am not sure what it comes with.

3) Do I just buy a factory header gasket and donut gasket to work with the greddy? It did not come with gaskets.

4) Is the replacement from autozone good enough or do I need acura gaskets?

Anything else I need to be concerned about while doing this?

Thanks!

 

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