Disc brake conversion

Ant said
Some important questions:

What is the car being used for?

Have you ever driven a vehicle with properly adjusted drum brakes?

Have you ever driven a vehicle that at least has rear drum brakes?

I had an Impala 64 SS several years ago with power drum brakes and it seemed to stop fine. My mechanic just bled and adjusted my brakes and it helped some. They will not lock up when you try to.