What exhaust manifold are you guys using? I have a Garrett T04 with an HKS 40mm wastegate and a XS Power mani. I had both the turbo and wastegate rebuilt but am worried about the cheap manifold. They sell for 200 new so i dont have alot of faith in them. I am in the middle of the swap so I would like to make the change now while it's convinent. I found a deal on an used HKS T4 mani but I just dont know whats good and whats not or if they are all about the same. Also I am building it as a track car to run in the NASA TT series, I dont know if that makes a difference or not, but any input is appreciated.

 

3rd gen HKS cast works just fine. Tubular units will help with response and power output.