You have to double flare automotive brake lines so they won't split in the flare. Either the lines on my Fords have always been replaced before I got there, or there is a factory joint midway down the frame.

If you have this joint, measure to the front how long a piece of line you need, and then go to the store and they have universal lengths they sell, already flared with the fittings. The only problem you may run into is up front where sometimes they used the 3/16 line, but they used a oddball oversize nut. In this case you will have to cut your universal piece of line, slide the oddball sized factory nut onto the new line, and then re-flare the new line.