If it is the little rivetheaded studs,they are spot welded on with something like this.
http://www.sjdiscounttools.com/jlm2000.html
If the clips are rotted they can just be bought. In fact I think the ones from a fox Mustang I scrapped are the same as my '67's Stu
http://www.sjdiscounttools.com/jlm2000.html
If the clips are rotted they can just be bought. In fact I think the ones from a fox Mustang I scrapped are the same as my '67's Stu