You will need to join the Sweptline forum,
http://www.sweptline.org/forums/ for information and parts. It's a good bunch of guys and I still drop in to see what's going on there. Don't tell them you are putting Chevy parts on it though, LOL. They are as Dodge as the folks on this forum are Chevy. I like your idea for color. My last truck was a 69 Dodge that was tan like yours and I put a red interior in it.