The problem: You have swapped your muscle-era Mopar to front disc brakes. Now, bleed as you might, the pedal is still spongy. SPONGY PEDAL FIX. MoPar to ya! Rear Drum Brake. Sold as a pair (2 pcs.).
for MOPAR Disc/ Drum Brakes Proportioning Upgrade A/B/E-Body Dodge Plymout
for MOPAR Disc/ Drum Brakes Rear Wheel EARLY LOCKUP FIX A/B/E-Body Dodge Plymout
Mopar Disc Brake Proportioning Valve & Metering Valve Disc Drum A, B, C, E body
Mopar Disc Brake Proportioning Valve & Metering Valve for Disc / Drum A B C E
8" Zinc Power Disc Drum Brake Booster Kit for 1962-74 Plymouth Mopar Dodge
1960-1974 Brake Proportioning Metering Valve for Disc Drum Fits Mopar A B C E