Re: 1/8 to 1/4 bore Master Cylinder, does it matter?
Yes he means 1-1/8 to 1-1/4. The 3/4 tons had a larger wheel cyl. bore too I believe and so it all evened out. By increasing the MC bore and not the wheel cyl bores, you will have less braking power. an 1/8" x 3.14 will be more loss than you realize at first.
I got a Raybestos or Bendix off Rockauto for under $35 as I recall. Good unit. I have gone new in the past for these old rigs but have actually found better quality in a well rebuilt one.
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