Billet EK EJ K Series Brake Master Cylinder Reservoir Civic Integra Prelude CR-V. NOTE: If you own a 1992 to 1995 Civic or a 1994 to 1997 Integra and wish to use the Bull Boost reservoir, the simple solution is to replace both the brake booster and the brake master cylinder with those from a 1998 or later Ek9, EK, EJ6, or DC2 model.