KH Discs vs 73+ Discs

So, I had the opportunity to drive someone's '73 Duster today. It had 73+ discs up front and 10" drums in the rear. I didn't have my KH discs 100% dialed in at the time, but I felt like I had more confidence in my Dart's stopping than the Duster. My Dart had a tired 273, 904, 2.93 gears, and 205/75/14 tires. The Duster had a built 360, 833, 3.23's, and 225 tires up front with 275's out back. It was a fun and short ride and that car was definitely built well.