Not all of us are lucky enough to have AC.The Civic "half size" radiator and the Integra "full size" both have the same coolant capacity(at least the stock ones do). I would imagine the increased surface area of the Integra radiator allows for better cooling, but I have seen many people run the half size radiators in Integras without issue.
The issue you'd run into is where to mount your AC. That is, if you have it.
i have mine if you want itNot all of us are lucky enough to have AC.
I could go to pick-a-part and get it but I'm lazy.i have mine if you want it