Not sure how much power until I get mine on the dyno.
Don't forget you also need the SVT throttle cable and bracket. Personally, I've been driving around with the SVT LIM and throttle body along with the stock SVT air filter assembly/K&N filter and I like it better than the stock set-up from 4,000 rpm to red line.
you will get some power but don't expect a hugh amount ... you also need the SVT tb and bracket and accordian tube also ... make sure you get all new gasket and 0-rings for the injectors ... don't use the SVT injectors unless you are going to use a SVT PCM or have the car tuned for the larger injectors