A and C pillar trim change over

I know the 70- 72 dusters and demons had metal C pillar sail panel trims and I'm thinking they had metal A pillar trim as well ( correct me if I'm wrong). I have a 74 with the plastic pieces that were pretty much destroyed by a life in Texas. One A pillar is trash, the other is in a million pieces in the floor board. No literally, a million pieces. It turned to dust while pushing the car around. I say all that to say what is required to swap over just short of a full blown interior change?