Need help with Brakes!

I need a brake line for the passenger side caliper to the proportioning valve. I need to know what size, length, and if both fittings are the same on each side. From what I've found from searching, they are double flared. I'm pretty sure there is only one type of double flare, but I just want to be sure for when I go to get the line tomorrow. I could not find what size the lines were though.

I have an 87, 4.0, D30 front.

Most good autoparts stores have pre-cut and pre-flared sections of brake line, in various sizes.

Yes, I know. Which is why I want to know the size of the lines.

bring what is left of the old one and match it up. Should be standard thread. hope that helps.

I know the caliper end is 3/16" double flare and would bet that the other end is the same?