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It comes with everything you need,the bung shown in the pic goes in the big pipe and the small pipe goes on the dump valve, then just bolt on using your existing gasket,takes 5 mins to fit.I dont think it will fit a 93wrx because you have to fit this one on the intercooler.It is a vta dump valve.
[Edited by stevejohnson511 - 12/29/2003 7:05:55 PM]