Rear brake supply line size

[tmunroe22]

Hi, 1971 Nova Willwood 5/16 Master cyl, Stoptech 14" rear brakes. What size line to supply the back brakes from the MC? The Willwood proportion valve is set up for 3/16" but all my trucks have 1/4" going back supplying the 3/16" lines to each wheel. I think this Nova had that stock as well. Thanks for the help.

[79 Camaro]

I've used C5 brakes on number of projects and 3/16" has always worked for me.
I like the ni-copp lines. It flares like butter.

[tmunroe22]

Thanks for the help and I 100% agree on the line choice!

[showdog75]

Another vote for 3/16 cuni. To each there own with choice of flare type but I'm a fan of AN flares.