hi i have a 65 chevelle and some day i want to put disc-brakes on the front but for now i have to use the drums up front. i put new shoes and wheel cylinders & brake lines on it this past weekend and they turned out to be pretty good! but i still have the single fruite jar master cylinder on it and i want to up grade to a dual cylinder. safety reasons .what cylinder do i need to buy to do this? im hopeing some body might point me in the right deriction on this. thanks alot scott.

Scott,
Just seems like a lot of extra work after you went thru the troubles of replacing the other parts and bleeding the system? Any way you can leave it until your ready to switch to discs?