[iVteC_PoWeR]

im not extremely 100% sure on this one but pretty confident this is right...yes you can run an external wastegate even though your turbo is loaded with an internal...to my knowledge youd weld the spring on the internal wastegate shut and make sure your turbo manifold has a flange for an external wastegate and run it from there...now the part im not too sure on is how to shut down the internal wastegate but im almost positive thats how to run the external wastegate