A-body donor car for 1966 Barracuda

As many of you know, I am attempting to restore/rebuild/just get running my dad's and grandfathers 1966 Barracuda. I have read and read and have tried to use all the information here, but it leads to more questions.

Right now I am looking to get a donor car for the disc brakes and maybe even the rear end. I have found a 1976 Duster fairly cheap and was curious if the rear end and the brake setup would be a good fit for my car?

Thanks,

John