Ross,
I feel the clunking was coming from my worn springs. I suspected them since I didn't change them the first time. (I only changed the struts) Didn't you just change struts and springs? The rubber
donuts form themselves around the top and bottom of the springs, I assume to prevent any metal to metal rubbing noises.
I hope you find your clunk........are you sure you got updated mounts? (If it is a '92)

Tim