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Hello, I own a bug eye wrx with sti transmission and I am planning to install a Gtx3076 1st gen turbocharger and install forged internals with a target up to 470-480 hp to the crank. Can stock sti exhaust headers, slightly ported, handle that setup? I know that aftermarket 4-1 uel headers have better flow but the stock ones have better sound so if I could keep them it would be ideal for me.

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