brake line corrosion.

[exosteve]

Been a member on here for ages.
But I don't know how to search the forum.
I need a link or info on how to replace my brake lines.
They were pitted when I brought it.
I've painted over them a few times but it may be a good idea to replacethem .
Is it easy? Is it expensive?
How do you change them?
And are the pipes are formed to fit car or do you buy it in lengths and shape yourself?
What about end fittings?
I ain't got a clue.but it can't be that hard.
I'm good at airfix not much difference really apart from scale