The rennline rear toe arms with bumpsteer adjustment includes the locking plates so that saves a little, they are the ones I am running. They also sell an adapter that you can pair with a tie rod end from the front, to get affordable toe adjustment without bump steer capability. Also I think 986piper from this forum is working on an affordable option.
I'll write back tomorrow about my suspension upgrade experiences on my 2000 S, it is all sorted out now but I made a few missteps along the way that I can share
