So I'm a little confused. If you are running a drum/drum system (and won't be upgrading to disc/drum disc/disc in the future), is the MC that is ordered from CP ready to use WITHOUT the residual valves?

http://www.classicparts.com/1947-59-Dual-Master-Cylinder/productinfo/71-201/#.VRwHBvzRJ8E



1955 GMC 100 Series 2