1.75" early Ford brake shoes are a good replacement for your 12" Bendix style brakes.
1967-1970 mustang 8.5 inch dual diaphragm brake booster new BENDIX style
1970 mustang 8.5 inch dual diaphragm brake booster and master BENDIX style
1967-1970 mustang 8.5 inch dual diaphragm brake booster chrome new BENDIX style
1967-1970 mustang 8.5 inch dual diaphragm brake booster and master BENDIX style
Bendix Style Front Brake Kit, 12x2 Inch, fits 1937-48 Ford Spindles
8" Dual Bendix Style Power Brake Booster with Plate FITS 1966-1970 Mopar B Body