line lock orientation

TrailBeast said
Note that all I had to do was cut the line and feed it to the lock (one end of it in, and the other end to the out)
The lines are installed in the line lock with 3/16 steel compression unions, and one end of each union has the nut removed and is threaded directly into the lock body.

TrailBeast said
The line lock I have came with all kinds of adapters and crap that I just wasn't willing to stack up to make something work.

The threaded line holes in the lock are 1/8 NPT and the threads on the 1/8 steel compression fittings (mandatory for brake lines) are the same thread pitch but not NPT.

so IF i got this right, you used something like this
Pack of 5. 1/8" Male NPT x 1/8" OD Tube Compression Fitting. | eBay

but of an unknown size?

does anyone know the OD of the stock brake lines on a 71 slant 6 duster with 9 inch drums all around?

(no, i dont have calipers, i know, i really should buy some)