I’m working with Mustang Cobra brakes on a Factory Five Cobra. I replaced the front pads (Hawk) because they would dust the rims with very little use. I went to Akebono ceramic low dust, and the pedal effort is much harder. I have tried to lock them up but so far unable…I need to try again. But iam running very sticky track tires. I might buy a new set of pads and hope they improve.