1984 GMC Sierra 3500 looking for rear brake line

[2badgn]

Hi

I have an 84 GMC 1 ton 2wd single rear wheel pickup.
Brake pedal is soft and brake fluid is leaking from passenger rear L line - it’s about 2 inches. Looked everywhere but can’t find this line.

I bought a brake kit from Amazon which included 1/4 inch copper brake line and 3/16 copper brake lines .

Thanks for everyone’s help

[65chevysub]

Inline tube has a set of 2 for the rear. Part number CTB81R4. 81-87 2 wd Dual rear wheel OE steel. $39. Check out their website:
www.inlinetube.com