Need supercharged throttle body advice

[5.4 speedster]

I am wondering if my current 70 mm throttle body and 70mm intake inlet is a restriction on my supercharged setup. I run a novi 2000 @11lbs of boost through 3 inch inlet pipe that meets with the throttle body. I can get a 75mm tb real cheap and I am wondering if it would be worth the time to open up my intake maniflod to 75mm and run the bigger throttle body? I plan on upping the boost to around 15 pounds.

This is on my 95

 

[SQ Stang]

You'll gain more power that's for sure. I would do it if I were you.