Rear line between junction and left wheel cylinder. What size fitting goes into the junction. I know it's not 3/8-24 double flare.

 

There is a very good chance it is Metric and your nearby auto supply store probably has a section of that size already made. If you can take the old line and have them see it and they should be able to come up with a close correct replacement.

 

Hanky. I know the side going into the wheel cylinder is 3/8-24 and side going into junction is not. Most auto stores dont have mixed size fitting on lines that are 20 inch long
QUOTE=hanky;99640]There is a very good chance it is Metric and your nearby auto supply store probably has a section of that size already made. If you can take the old line and have them see it and they should be able to come up with a close correct replacement.[/QUOTE]

 

I would first confirm the proper size nut to fit the fitting then get a line with that size nuts, remove the cyl end and install the proper nut there and make the correct flare.