If I use the stock mc (with a 1 1/4inch bore) and front brakes (because I have the parts) Could I use proportioning vave in the line? THE front clylinders are step bore 11/4 X1 3/8The 1987 Dakota is a 4 wheel drivewith disc brakes the front hubs bolt on to the spindleand backing plate IF this works I will have to change the MC over. IThank you in advance.