If and when you do get you urethane bushings and such, if you replace the A arm bushings buy them WITH the metal shell. Getting the original rubber bushings out of the shell is a serious PITA.
Also, be careful adding offset rack bushings. They can hurt more than they help. If you are really concerned about bump steer, get your car professionally checked.
A solid steering shaft from Flaming river also does a nice job of improving your turn in.