What donor vehicle to get disc brakes setup from for 72 swinger.

I once saw on this forum that you could use parts from a much newer vehicle to convert a 72 dart with drums to disc brakes. Would anyone know anything about this? I know I could just spend like $1500 for new parts but honestly the money is just not here at the moment. I have a lot to fix on the car and 1500 on brakes at the moment is just not at the front of the line.
Nothing wrong with drum brakes If you aren't racing.