if the shop is going to do everything- just remove and re-install
make sure it's a competent shop- if they go in half a$$ed they could easily mangle the tailing links- they are metal lined bushings in they are in there "good"
the rear trailing link bushing actually resides in the knuckle itself, so if you plan on replacing it ( I can tell you the oe bushing is mush) then you might need one of those goofy tools