Just curious if any body has a part number for the GMPP Header / Exhaust Manifold and also the cheapest place to purchase? It definitely is the weakest in the Performance category, but hey, I live in CA were emisions are the strictest! Any other bolt on Header might cause a problem when Smoging the ride!

 

crate engine depot

 

GOT IT! THANKS...

 

Will the Cobalt Extruded Honed Exhaust Manifold fit the 2.4?
http://www.crateenginedepot.com/stor...P1381C139.aspx

 

I'm about 99% sure all exhaust manifolds are the same on ecotecs after 2005 or 2006.

 

Who else makes a header that will keep the cat

 

The down pipe is what has the pre cat, so any header that will bolt up to the stock down pipe would.