Dr. Diff 10 x 2 1/2 inch or 11 x 2 1/2 rear drum brake Assy

72bluNblu said
I've run the factory 10.95" front disks (DoctorDiff stage I) with 10x2.5" rear drums as well as the 11.75" front disks (DD stage II) and 11x2.5" rear drums. The 11.75" front disk with 11x2.5" rear drum combination is a substantial increase in braking power, and still works with 15" wheels.

I've actually run all of DoctorDiff's front brake options, from Stage I (factory BBP brakes) all the way up to Stage IV, his 13" Viper kit. The 11.75" disk front with 11x2.5" rear drum set up is by far the best bang for the buck, and is honestly very close in performance to the Stage III front kit with 11.7" rear disks. The Stage IV kit with 11.7" is a decent improvement from there, but that requires minimum 17" wheels in the front.

For a street car the 11.75" front disks with 11x2.5" rear drums is a really good set up.

11 " disk up front, 11' drums in back what I have and the car stops extremely well!!

Here's some pics of the size difference and the Moser axles I used with threaded studs.

Also, side by side comparison of 10" vs 11 inch drums.

As well, , I used the hand brake cable setup from a 71-72 Demon (Rock Auto) and it installed and worked fine on my 68 Barracuda Fastback.