I have a 1990 Buick Regal Presidential the car has only 66,000 miles on it but the age monster is having its way. The brake lines for this year no one seems to stock or manufacture replacement kits and the passenger rear is leaking right at the coupling with the rubber line to the caliper. I have the shop manual and it shows what looks like a push-in nipple on the steel line that is held by a clip. My fear is as soon as I touch that joint the rusted steel is going to fail. Since I can not find a replacement and the local Chevy/Buick dealer looks at me like I am from out of space and just says NO! hoping someone here has a workaround or knows a supplier that makes the connection or whole kit for the car. This is a 1990 Regal 3.1L

Thanks in advance