Rocker panel moldings

I thought that I would eliminate the rocker moldings on my '91 Caprice. Then I realized how much was involved and decided that I like the moldings being there after all. Only problem is, the ones on the left front fender and the left rear door are missing. I have found a Caprice sedan in the local scrapyard. If it is still there on Saturday I plan on getting the moldings. I might get all the rocker moldings off of it if they are not too difficult to remove. Any tips on removing them without damaging them ?

Pretty sure they just unscrew. Maybe bring some PB blaster if you live up north...

Two 11mm nuts, and fragile push pins 3 on the front 2 on the rear.