So you'll be using a proportioning valve, the brass GM kind with 2 inlets, 2 outlets for the front, and one outlet for the rear?
If I were doing it I'd use two lines 1/4" between MC and proportioning valve if I could. Then use 1/4" from valve to rear axle hose. Use 3/16" for each front brake line. On the rear axle 3/16" only if that's the original size, or if originally 1/4" I'd use all 1/4" for it again.
I'm sure you could get by with other methods, the one above is what I think is best/right, might not be what everyone else has done. I could also be off some; if so I'd like to hear a better way of doing it with good reasons why.
Grigg
