need backing plates and drums for a 7 1/4 diff

I need backing plates and drums for a 7 1/4 diff with 9 bolt cover and 5 bolt bearing retainers. It will be going in a light duty /6 62 valiant built for mpg so do not need great big honkers. I'm in York NE. Don't really need the drums (can buy new if I'm sure which ones go with the plates.