take all your fittings and brake line measurements to your local napa or auto value and tell them what you need, they'll set you right up.
Don't flare your own lines, it's not worth the risk of them blowing out or leaking. I don't care if you have a hundred years of experience I won't let you flare my brake lines.
I remember the first time I worked on a brake line. I was 17 and needed to replace a brake line on the 89 Ford Ranger that my parents was so kind to let me drive for free. I blew a brake line after a hard stop to avoid a deer. I tore the brake line out and took the fittings to my local auto value (same place dad always went for years, the guy has known me since I could walk). I told him I wanted a roll of 25' brake line, a flaring tool, and the fittings that I needed. He refused to sell me everything I asked for. I was so mad and couldn't believe he wouldn't sell the stuff to me. He said that he had several different lengths of brake lines and adapters that he could make them work for me. I told him I didn't want to do that because it was going to cost more money to do it that way (minus the flaring tool). I told him I would just go to the other parts store in town and buy the stuff then continue shopping with them and walked out the door!
By the time I got to the other parts store the guy from Auto Value had already called them and told them the story and the guy at Napa refused to sell me the stuff! I WAS PISSED!! I just went home.
By the time I got home and went to tell dad the story of the guy at auto value (figuring he'd be on my side) dad had already went to Auto Value and gotten pre flared lines and the adapter fittings that I needed for the repair. THE PARTS GUY CALLED MY DAD! This made me even more mad, then my dad said "He's just looking out for you".
I have tried to flare steel lines over the years. Sometimes they're good sometimes they're are bad. But I now see why the guy at Auto Value did what he did.
I still shop at Auto Value today dealing with the same guy, every time I go in for brake lines the story comes up.