You can just rip off the old trim off. It will leave the studs mounted on the header panel. They all need to be removed before installing the new new trim though. Or you can crawl underneath the front and remove the nut on each of the studs. And there are a lot of them.
There are 2 almost identical replacement (GM Truck side trim) available. I don't have the numbers handy...1 is slightly wider then the other.
I do know when you order it online, it will say that it is black, when in fact it is the chrome with the black stripe like Jatguit posted.
I uses a 2 part adhesive at each end and at the point of the nose....
Don, you can simply copy the entire link from the address bar of the site you are on and want to link, and then paste it into your post here.
If you could copy and past your car into my driveway, that would be great! Put some poverty caps on it and it is exactly what we had new in 1978!
Found a picture of the part...
here's 1 vendor...
001 Universal Automotive Body Side Molding Chrome and Black From Trim-Gard 9001-32 This is very similar to OEM Silverado Molding used before 1987 Has two half inch wide 3M acrylic double-sided adhesive strips to hold secure. One piece 2 1/4 in x 32 ft (57.2 mm x 9.8 M) This is not OEM but sell...
karstripes.com