door panel retainer clips
Here is a link to the new parts for the door panel retainer (plastic retainers)
http://www.lategreatchevy.com/catalogsearch/result/?search_year=1962&q=door+panel+retainer&x=41&y=12
I agree that the new ones are hard to use. What I have done is drill out the new ones with a drill the same size as the nails in the door panels(so they will push in like the used one easier). I have used the old ones but they can be brittle and break trying to push the nails into them, or even when trying to remove them from the doors. Its hard to save lots off good ones, my supply has come off of many used doors.
You need to make sure the used ones are in good shape, since you do not want to have them break since the new door panels can sometimes not fit good and the nails in the panels can be broken off. In other words do not remove and replace the new panels lots of times, nails can break off which can ruin the fit of the door panels, depending on how many are broken. The new or old plasitic retainers should be installed with a rubber hammer.
Paul Stensland