Help with figuring out wheel cylinder brake line nut size.

[joegreen]

I want to surprise my dad with new brake lines for his truck that i am going to make up for him. I am buying the line and fittings. I dont have access to the truck and i cant figure out what the fitting size is for the rear wheel cylinders and for the block on the top of the rear axle the two hard lines go into. The truck is a 1988 k2500 with the 9.5sf axle.

 

[Imp4]

Why not just walk into your local autoparts store and ask?
Instead of asking here in the den of speculation.

 

[joegreen]

Why not just walk into your local autoparts store and ask?
Instead of asking here in the den of speculation.

I like the den of speculation. Anyway i used rockauto to check the main rear brake hose and wheel cylinder fitting sizes and it says they are 3/8 so i will get some 3/8-24 fittings.