not a priority unless you want your abs to work and the car to handle better.
did they tell you witch hubs were bad?
the rear brakes, take them off and see if the caliper pins are rusted up, or the caliper its self is sized up, aka the piston wont retract on its own, keeping the pads dragging the rotor. if its the caliper pins clean them and the holes in the caliper with brake cleaner, then grease them with synthetic grease.
if the pistons wont retract get new calipers for the rears.
sway bar cost about 100 for a solid doorman replacement, the stock one was hollow. and the ends snapped off. you may have been hearing a clunk when turning from this.
almost all of these repairs you need are listed in the how to section, and are quite easy to replace yourself.
your looking at around 300 in parts just for the sway bar, and hubs, you need to check your brakes out and see whats up there. i think someone was selling a set of stock rear calipers on the site too. parts for sale section.
