No, they ITR is different. Certain body parts are actually stamped differently for the sake of rigidity.

Yes, I agree that sway bars make the biggest difference as far as handling dynamics. The only real benefit to lowering IMO is stiffer spring rates.

You won't get a normal Integra to be as stiff as an ITR without a roll cage or some other unconventional methods but that doesn't mean that the car can't be fun to drive.

And I agree that holes don't necessarily make something weaker. DC Sports strut bars flux like wet noodles though. I know this through first hand experience. Could be the design or materials....or something else. Who knows. They're just bad functionally but boy are they shiney!