early a master cylinder swap

thank you so much for the info .its always good to hear things that work ,not what should work .ill get the cylinder today .did you use a combo valve ?was just thinking if something did leak .theres use to be a short wall in between the front and rear of the master cylinder? would that keep enough capacity of fluid to the front or rear depending on the leak ?i guess im asking should i plumb in the combo valve or run the lines direct front port to fronts and rear line to the rear ? i haven't restored or upgraded on this type of system before ,always just converted to disc .im sorry that i have to ask this question. BUT for 1 i just wanna be safe ,[use the valve] and 2 do it right ? [does the system need it or is the master cylinder designed to handle/ have the capacity for the leak ? THANK YOU once again! now after over a year and some set backs i can drive my car before i decide if i really wanna do a ''GASSER'' build on it .its members like you and all the fabo family, that makes working on these cars simple instead of tolerable.