It has 1/2" and 9/16" ports on driver side.
1967-1970 Ford Mustang Power Brake Booster 8 in Dual Diaphragm PB0013
For Chevy GM Universal 8" Dual Diaphragm Silver Power Brake Booster Street Rod
Tuff Stuff Power Brake Booster 2223NA; 8" Chrome Steel Dual Diaphragm
8" Dual Diaphragm Universal Bendix Style Brake Booster Chrome Finish Booster
1959 1966 Cadillac Black Power Brake Booster 8" Dual Diaphragm
Dual Diaphragm 8" Power Brake Booster Chrome Universal Hot Rod Universal GM