Since your master cyl is under the floor, you need some type residual pressure valves, as gravity will want to cause problems. The M/C you bought may have them, or you can use the inline ones, use 10 lbs for drum brakes. You need to overcome the gravity force on the fluid.
I bought two 10 lb inline just incase. I guess I need to research my master cylinder to see if it has them already
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