Im replacing the old worn stock struts, 97 Imp OBS, with BC coilovers. Im wondering what else, suspension wise I should change while in there? Ive already upgraded to 22mm swaybars and whitline endlinks so those bushings are good. Just not much of a suspension guy, so need a little advice. I think, a while back, Subaru dealer may have told me I needed to replace tie rods, or maybe it was ball joint. Dont remember though.

Was thinking something like this. http://www.ebay.com/itm/151484239679

If your lowering your car, then yeah that might be an option.  Otherwise I would go with OEM ball joints, if they are bad.  But before doing anything I would jack the front of the car up and get it on jack stands then get up under there and check the ball joints/tie rod ends for problems first.