Are they 10” drums? I believe the Formula S comes with 10” drums in the front which is leagues better than the 9” drums.
I daily drove my 67 Dart GT with 9” drums on all 4 in So Cal traffic. It was doable, but discs were one of the best upgrades I did. Again,that was daily driving in fast paced traffic.
Best shoes were the Raybestos riveted and I was always adjusting them to keep the braking straight.