Originally Posted by
madweazl
I think the only thing that is pretty much mandatory would be the aluminum steering horn and the LRC rear pivot block. That will give you the options you need to have something reliable and dialed in pretty much everywhere.
+1 That will get you off to a good start. For spares I would get inner hinge pins and front arms. They aren't fragile but arms are usually the first thing to break on a buggy in a heavy crash.