Sorry for the confusion, the rotors do need to get turned. If it was just putting on the new parts I'd do it myself. I've done it on the Galant and full size Bronco- just hate doing drum brakes with a passion.
It doesnt hurt to get them turned but if you feel better about having new ones then knock yourself out, I will be doing the tundra brake switch in the future due to how sensitive the 4runner rotors are. I have heard and read that the 4runner rotors alot of the time get warped even by stealerships when they do tire rotations and this happens b/c they will use the air gun to tighten down the lugs causing the rotors to get warpd from to much pressure. I dont know how true this is but I def take it into consideration with my own rotors now and rotate my own tires and only use the ratchet to tighten my lugs down to dealers specs.