What is 3/4 FBO haha this
What is 3/4 FBO haha this just tells me you've likely not really modified anything because that's pretty much stock and thinking IAG would be comparable is hilarious. An IAG FA20 block still won't hold as much power as a stock FA24.
It looks like you're either intentionally not understanding the trim or just are not really versed in cars. The GT is literally a lifted WRX which will be basically a performance sedan Crosstrek.....the real WRX will still be manual, as will the STi, which is really the only trim that matters.