Brake lines from servo query - which way round?

[Jonny M]

I'm part way through a midlife crisis and building a hotrod, with what I believe to be a Corsa B servo - with vertical mount, and 2 brake lines coming off it

Question if people could please steer me in the right direction;

I'm guessing a pipe for front, and back; which way round though?

I'm guessing the bottom feed would pressurise first; so would that be the front brake supply?

Any advice much appreciated.

Jon

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