This is a four port master cylinder, so you can use the ports on whichever side you need and block the others. Master cylinder includes an adapter so it can be used on manual brake applications or with a power brake booster.
GM Master Cylinder with Disc Drum Proportioning Valve Disc Brake Kit 1 1/8" Bore
GM Master Cylinder with Disc/Drum Proportioning Valve Disc Brake Kit 1" Bore
GM Master Cylinder with Disc/Disc Proportioning Valve Disc Brake Kit 1 1/8" Bore
GM Master Cylinder with Disc/Disc Proportioning Black 1 1/8" Bore
GM Master Cylinder with Disc/Drum Proportioning Valve Disc Brake Kit 1 1/8" Bore