email me but if you pay attention they should have been setup for external wastegates. And what turbos was it made for well the popular choice for pentroofs where either HKS 2835s or Greddy TD06-20Gs, tho pentroof and manifolds can be made to be used on anything. Turbo boss also made some manifolds there were copies of the pentroofs. But yes it requires customs down pipes, turbo inlet and exhaust and etc.