Right Stuff Detailing Hydro-Boost Brake Booster / Master Cylinder - 1 in Bore - GM Fullsize Truck 1973-87 Spark Plug Wire Sleeve the MSD Circle Track HEI CR9150 15 Bolt Pattern 4 Size:Large (54-56) VIB10931

the MSD Circle Track HEI is peaked and tuned to provide ultimate reliability and strength to run circles around the competition

Founded in 1979 and headquartered in Southern California

Engineered For Competition

however it requires welding a bung into the tank

Right Stuff Detailing Hydro Boost Brake Booster Master Cylinder 1 in Bore GM Fullsize Truck 1973 87 Spark Plug Wire Sleeve the MSD Circle Track HEI CR9150 15 Bolt Pattern 4 Size:Large (54 56) VIB10931 the MSD Circle Track HEI is peaked and tuned to provide ultimate reliability and strength to run circles around the competition Founded in 1979 and headquartered in Southern California