what do you mean nipples? if you mean the window crank prolly not i have an si and the only difference from a manual window and a power window is the whole is the arm rest on the door panel. you would need to get power windows or cut a whole is the si door panels which is pretty much pointless so idk what your goin for but as far as i understand its not worth it.
my Si has power windows in it (friend did the conversion) the window switches are by the E-brake...
i kinda want to do the same as you and convert to Ex door panels... when i have the money.
anyway, im sure if you convert to power windows, the Ex door panels will work no problem.