Yes, it's possible. If your bed sides are in good shape and you want to try to save the patina, go for it. If your sides are in poor shape and you are going to repaint, you might be better off buying new sides.
Check out this video made by member SkinnyG:
It's for his 61, but the beds are similar for the step sides through the years, so same general idea.
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Christian Carpenter
1963 C10 -
Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer -
Half-Wit
1981 C10 -
Penny 305, th350
1995 Dodge Dakota Sport
"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson