Yes, with manual brakes in nearly every case you're sizing the Master Cylinder sizing to the Pedal Ratio more so than the calipers. Our Dual Piston Brake Booster Delete with Bolt-on 6:1 Pedal Ratio uses a 1" Master Cylinder which is sufficient for 2 Piston F ront, 1 Piston Rear all the way up to 6 piston front, 4 piston rear. The important part is that your pedal can leverage the Master Cylinder to get all the clamping force your pistons can output...that's all in the pedal ratio. You're set!