My stock turbo went bad. The turbine on the exhaust side snapped off and there is not much left of the fins and the other one has curled fins on it. Not sure what may have caused this? Well, I need to replace it and was wondering if I have to replace the turbo along with the exhaust manifold or can I just replace the turbo? I had read somewhere that you have to replace them connected together as an assy. because the turbo will leak if you just replace the turbo alone. Is this true or can I get by with just replacing the turbo alone? I also can not find a tourqe spec for the clamp bolt if just replacing the turbo only. Anyone familiar with replacing a bad turbo? Any and all info and tips replacing the turbo would be greatly appreciated. Thanks, Brad.