my 68 cuda engine compartment

Ask the counter guy at the parts store for "a spool" or "a coil" of brake line. You can get them in 25' lengths and they probably have them in stock. If you just ask for a brake line, you'll get whatever pre-made ones are on the rack which top out at 5'. I just went through this. I bought a 25' coil for my Fury. Worked perfect.