Couple brake line question!

Getting ready to plumb the brakes on my 48 Chevy, I think it is the 67-76 vette master but its been so long I cant even remember. 79 camaro rear with stock drums, mll front with granada discs and a power booster. So I see the ports for the rear lines are larger than the front ports. Should I run 3/16" all around or just 3/16 to the front and 1/4" to the rear? I will use a porpotioning valve in the rear along with a 10lb residual valve and a 2lb in the front. Any tips would be great thanks!

 

all the brake systems i have done i just use 3/16 all the way around and i have never had a problem.

 

Ok thanks