If its just a knock off greddy manifold... I wouldn't. There's really no reason to. On a T2 setup, even with a 2871 you wouldn't even be close to having the need for an aftermarket manifold. Plus I've seen idle issues with those manifolds as well, and a lot of them have slag and other junk inside them.
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Originally Posted by PJ Prendergast
i went to a scrapyard in Kilcock today looking for my 180sx tail lights, no luck though 
...and then I wondered why I was on Stanceworks forums...