Just recieved my dougs d450 headers Wowwww

Stroker, Did you have any trouble with the brake lines? I have Doug's on my 66 D/Dart and had to pull the engine and trans to correct some problems. The original owner had SSBC brakes installed with a duel master cylinder. The routing of the metal brake lines is a joke. I have a complete set of lines and was wondering if I install them, will I have trouble, interference issues, with the 2 lines and new brake block?