It is incredibly simple to add a sway bar IF the car had one originally or the lower control arms at least have the holes for one. I have SSM lower control arms on my car, the holes are put in from the factory, after installing the sway bar I checked the factory arms and they didn't have the holes.
Aside from that, it's a matter of 4 bolts and possibly a shim kit. Installing is a breeze, squeeze the bar between the lower arms and bolt it in. I personally wouldn't put a swaybar on a nonboxed control arm, I think it would flex and twist too much.
Jeff