if you're asking questions on how to do an awd conversion on the rsx, that pretty much tells us you don't have the slightest possible chance on doing it. not all awd systems work the same and even the simplest types are still quite complex in actually performing the conversion on a car that is not AWD.
however, i will say that the rsx is fortunate enough to be related to the honda cr-v and elements that swapping in one of their manual 4wd tranny and in doing so, sending power to the rear wheels is possible. it just isn't going to be easy since you'll need to modify the subframe to this rather particular transmission.
if you want to even attempt some type of awd conversion, the haldex setup would probably be the closest in working on the rsx. you could probably source a haldex rear pumpkin unit from a volkswagen r32 golf or audi tt coupe, but there's tuning bullshit to deal with the electronics.
or, you could almost straight in swap honda's real-time 4 wheel drive sourcing the parts from the cr-v or element, but this is not a true all wheel drive.