I converted from manual front drums in my Chevelle with a 454 (3800lbs)to manual front discs. Stopping ability was greatly improved, pedal pressure was about the same "lots of pedal pressure". So then I changed over to power. Changed the master cylinder to a power unit and booster. Stopping is the same but much, much less pedal pressure.

You probably won't have as much pedal presuure because your is considerably lighter. I have a 51 Ford Rat Rod with 11" Chevy discs in front and 10 bolt Chevy rear. I'm using the manual Corvette front disc master I took out of my Chevelle. It stops good and not too much pedal pressure because of the lighter weight.