not sure about the clunk. remove the lower shock bolt. then remove the ubolts, and bracket that holds the lower shock mount. undo the brake line from the axle (not from the brake cylinder) and get it clean it up out of the way. clean everything with brake cleaner. use a wire wheel to scuff it all up and clean off paint, etc. i then did three passes with TIG and connected into the old weld on the sides. then check your fluid level.

Scott Landon
1995 T100 - total buildup underway
1988 4Runner (22RE, W56) - new DD
2005 Dodge CTD 4x4 - Tow Beast
1990 Spec Miata
2010 GT3
2013 E92 M3