71 dart Power brake conversion

calipers look like 74 duster calipers.......
Before the computers we would go to the parts counter, "I'm putting late model A-body disc brakes under my ( pre 73 whatever A-body ). I need a hose that looks/fits like this but about 3 inches longer". The guy says, "This hose is listed for Volare'/Aspen but looks like it'll work for you."
I doubt the guy would even consider thumbing his catalog to GM, Ford, Other, pages.