I was thinking of just using the stock manifold and getting all piping from the manifold flange back , pretty much all straight flowing exhaust with no cat and a 4" tip

streetporting is done on it , functioning 5/6ports using rpm switch, also gonna get an safc

im hoping to get 170whp with this setup is it possible or am i pissing in the wind ?

id rather spend less money and not get the header ( header is 200 bucks f' that)

 

Bumps get deleted unless it's been like 12 hrs to a day since you posted.

As for your question I think Icemark is making about 170whp with the stock manifold.