[Farmall] Hydraulic line for 340U?

[br549 at hemc.net]

I have sprung a hydraulic leak under the [deluxe]
seat of my '58 340 Utility. It is in the hard lines
that run from the distribution block under the dash
to the rear block (behind seat) for the fast hitch. 

I don't know what is the best option for repair at
this point - source a replacement (not a very common
model in this part of the south, it seems) or see if
I can get someone to braze the lines? Can I expect
another 52 years of service if it is brazed properly
(yes, there is a very good chance I can still be
using the tractor then...)?

Holloway and Sons is a vintage / antique tractor
salvage yard within about 80 miles but they had a
large auction in December and sold the F340 and T340
that might have had the part (not to mention they are
very high $$$ when I've purchased things in the past).

Thanks to all!