Brake Line Questions - 70 or 71?

[KyleSeal]

Currently building my truck back up, now I'm at the point of brakes.
Ive got a CPP 12in 2.5in drop kit on the way, with stock rear drums, so I will probably run a '71 Master Cylinder (since its disc drum for that year).

So would I order the 71 brake line kit from CPP or POL or do I order the 70 still? I'm under the impression my proportioning valve tube routing may be different, as well as the routing to the master.

What do you guys recommend? I'm on a tight budget but want the brakes done right so I want to get them good the first time instead of blowing a line due to poor bends!