The RS ans ST TB wont fit and plug in , Ford 
Throttle Body  Part # GB8Z*9E926*A Ford 
Throttle Body Gasket Part #9L8Z*9E936*A Ford TB Mounting Bolts 4 each Part...
The TB by it self isnt going to do much with out a Tune to open the TB all the way , if you do a Tune and open your stock TB all the way it does the same thing , the larger TB doesent really do anything
I can help with your Custom Tuning with free unlimited lifetime Tune updates
Tom