Options on my 71

[Bawood85]

I recently picked up a 1971 4x4 half-ton Chevy. I've always wanted one and finally found it. Looking at the build sheet I have a few questions.
1. It lists an option # 1BX2AD Body side molding-w. The truck currently has no moldings, so I would like to know what it had so maybe I can add them. Anyone know if this option would be top and bottoms? Only bottom? Were they all both top and bottom originally?
2. Option #1542AA white/medium blue. Guessing this is referring to the truck color since it's all blue. However, with the white...did it at one point have a white cab? Or a two-tone perhaps?

Thank you for the help everyone, I've been enjoying the information shared on here!