In my research I've read that there were two different styles of weatherstrip used at the bottom of the window, I believe that this piece is called the belt or scraper IIRC. To paraphrase NumberDummy from a post I found on the other truck site:
From what I've read it seems that the D1TZ outer belts are an improved rubber design. It is also my understanding is that doors from 68-72 are interchangeable. So would I be correct in thinking that I could use improved the 71-72 belts on my 70 model doors?67-70
C7TZ-8121452-A = Right Outer & Left Inner
C7TZ-8121453-A = Left Outer & Right Inner
71-72
C7TZ-8121452-A = Left Inner
C7TZ-8121453-A = Right Inner
D1TZ-1021452-A = Left Outer
D1TZ-1021453-A = Right Outer
My truck lives outside and in the woods, so I'd much rather order the 71-72 anti-rattle kit with the improved belts if they'll work.