i am gettin that 50 mm gate off of West coast turbos and the t3/t04e 60/63 57 trim for my Ls. The big turbo for my soon to be built b18c1 DA9. But i currently have and internal wg mani on it with the shitty TB06 and want to go External. What size pipe do i need for the 50 mm gate? I will be Mig welding it on (my school has a nice mig welder).



That is the manifold. I was told that either Csaddict or Hotrex made it. i think it was Cs--no big ol' gay "CC FAB" on it
in rainbow colors

 

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um, 50mm gate means at least 50 mm piping