If you have a clunking from the back end of your 1995 Neon is it the shocks and struts?

Factory rear struts would be well-worn by now (if still original), so it could be a big factor. Also, the strut tower bushing is probably worn. I have fould the Neon rear springs may have lost a bit of their cushining ability too (separate damping/rebound from the struts themselves), but often not enough to replace those when changing a set of new struts.