I am confused Don't worry, it happens all the time...

Our stock air intake system has been proven again and again through actual dyno, not butt dyno, to be the biggest bottleneck in the power making process on an NA. So if the stock system can not even get the motor enough air what makes you think that you need to increase the size of the TB? in my opinion, and from my personal experiences, you are in for issues with a TB that is not designed for your motor, intake or tune. Change the intake and tune and it becomes a bolt on but I am still not convinced that it adds but a few HP.

Just my $0.02