How to get the right Master Cylinder?

[msg]

As long as its ok to do and doesnt make something have the wrong pressure I was hoping to go 1/4 all the way round for all. From what youre saying Jocko its ok to do that right? Pretty sure thats what you were saying, just double checking.

Also, for fluid is the DOT3 what I should use or DOT4? Is there a brand that is better than others?

I heard that DOT 5.1 is great cause it doesnt get contaminated by moisture but I dont know if that AC Delco MC can use it.