What's better on a 4.6 a turbo or supercharger

 

depends what you want to do with it and how long you want it to last.

 

Well its a gt 4.6 I only have Saleen pulleys and stage 3 cams but I'm going to stroke it and add the turbo not sure yet but I am stroking it for sure

 

SC: slightly easier installation, snappier and more linear throttle response and low-end power, thirstier.
TC: more efficient, higher power potential, can be a bit soft in throttle tip-in and low end power (though high end rush can be exhilerating), more complex installation.