There isnt a whole lot of work in pressing out the bushings...its pretty easy and takes a max. of 20mins!!!
Throw your old RTA bushings in the fire to burn the rubber off, then give em a lick of wire brush and put a new bit of sealer on them.
Then just press the metal geezer into the new polybushing and repress into the arm.
It cant be all that hard to do in all fairness!!!!