as far as i know, the 4 door sedan steering knuckle/hub assembly aren't the same as dx models. crx knuckles should be fine just aslong as it isn't from a HF. the HF knuckles have a smaller spline count for the axles. everything else should be interchangable without any problems.

just stay away from EX and HF and watch out for those junk yard guys, they're full of sh*t.