Wheel cylinders for 11 inch brakes

i depends on what m/c you're using. i have a new master made for disc/disc setup which would require a 10 lb. residual valve installed because i'm still using drums in rear. these wheel cyls. from e-berg eliminate the need to plumb an inline residual valve as they have internal res valves. you can still go with rock auto or whoever but you'll need the res valve.