After doing a disc swap on my 64 Bonneville I noticed the big 11" aluminum drums stopped faster but always pulled to one side during a panic stop. I never had any brake fade trouble and with out terrain that was amazing.
The discs stop straighter but don't pull the car down as powerful as the drums did.
I have 11-3/4 discs up front and 11" drums in the rear with a adjustable proportion valve and a metering valve.
Now that I'm running 2.5 / 3 positive caster and a Lee 12 to 1 steering box I ofter wonder what those old front drums would behave like.