Ken, 3B is right on the money. NAPA carries the Weatherhead fittings but some may say Eaton on them now. I actually just purchased some fittings for my gas line/fuel pump at NAPA today.
When you went to a dual master cylinder there is a need, usually, to have a fitting that screws into the master cylinder and then the line screws into it.

I'm not positive but I think on yours it has/had a 1/4' line going across the rear cross member to a tee on the chassis rail just under the passenger seat. At the tee one line will go to the front and one to the rear. These are 3/16.

If you have enough ports on your M/C you could run a line to the left front.....which would mean the line from the tee on the right side would only go to the right front.
Did your lines have a bango fitting where it goes into the wheel cylinders? If so the 3/16 lines should, I think, fit right into them as the lines to the wheels are actually 3/16.

Hope something I've said may help you.


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