Brake line questions

[Thebrownturd]

I was just wondering what the sizes the ends are on the brake hose from the frame to my HO 52 axle. Are both ends the same size? What is a good line diameter? What is the total length I will need for a 3 in lift.

Thanks for any input. I will be putting a tuff country lift on my truck and needed a longer brake line. I cant take off my line to bring it to the store because I need to be able to drive my truck out to the ranch to work on it.