Rear brakes on 8 1/4 to 8 3/4 axle?

I took the front discs of a 75 Dart to repleace the disc setup on my 69 Barracuda. Got to looking at the 8 1/4 rear axle drum brake setup and was wondering if any one knows if the 8 1/4 axle brakes can be swapped out on the 8 3/4 axle drum brakes on the 69 cuda. They have a wider shoe and drum, look stronger. Thanks John