73 duster front brakes locking up when coming to a stop.

AJ/FormS said
no!
If the rear brakes are locking up, it is because the fronts are not working, and you are stepping on the pedal way harder than should be required.

I'm totally going to disagree with you on this one. If he's missing parts an the back brakes are not assembled correctly how would the front brakes have any effect on the crap that's going on inside the rear drums.?