This is a direct fitment turbocharger upgrade. No fabrication required.
If you want to stay with stock fuel injectors/pump or if you have an automatic transmission, the evo 16G is the way to go.
If you plan on a fuel system upgrade (injectors/pump), then I would step up to the 18G minimum. If you want more of an aggressive car, then do the HTA or the 20G.
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