Brake Booster: 9 inch - 64-92 GM w/ short threaded Various Dual 64-67 GTO/ Le Mans /

64-67 GTO/ Le Mans / Chevy Chevelle / Pontiac GP (pr) - 10 inches long

Note that these are produced in  "Alloy" to fit the cars just as well & and cool better then before

64-65 Chevelle & Malibu

500 B & W photos and plenty of illustrations

Brake Booster: 9 inch - 64-92 GM w/ short threaded Various Dual 64-67 GTO/ Le Mans /This 9 inch GM style Delco dual diaphragm power brake booster offers broad compatibility and a universal fit. It replicates the original Delco unit, featuring a short threaded rod approximately 25 mm (1 inch) shorter than standard. This version matches the chrome booster # PW220813A in design but comes entirely in black with the Delco trademark logo. As an additional guide below.. this might help people over time. DONT JUST BLAME A PART Don't have