I only know of one place to get the bushings I used, but I'm sure there are other bushing manufacturers out there. In fact, it isn't very hard at all to fabricate your own from poly mixes. That way, you can even fine tune just how stiff you want them. I got mine from a place in IN called SPA Technique, that distributes the Powerflex bushings that I bought.

If you are doing the bushings alone, you shouldn't need an allignment after wards, but it's not really worth doing unless you do struts/springs, spring seats, etc, at the same time. Plus, you'll probably need a press to remove them. The oe bushings are damn near impossible to remove without damaging the control arm, without a proper press and the proper cups to press them out.