You will need to modify existing brake lines.
1967 1968 1969 Ford Mustang 9" Chrome Power Brake Booster Master Disc Drum Valve
REAR Brake Shoes Spring Kit Wheel Cylinder fits 1964-1970 Ford Mustang 9 inch
1967-69 FORD MUSTANG 9" CHROME POWER BRAKE BOOSTER MASTER CYLINDER DISC DRUM KIT
1986-1993 Ford Mustang 5.0L GT LX Engine Radiator 9 Blade Cooling Fan w/ Bolts
DeatschWerks 9-401-1046 fits Ford Mustang V6/GT 415LPH DW400 In-Tank Fuel Pump