From what I've seen on my AD trucks some of the lines on the big trucks are the same as the smaller ones (or so close you can make it work without issue). Not sure about a 55.

Even so I have always and will in the future make any lines I need from scratch. With good tools it's not hard; and now that I've got some experience I actually look forward to making lines, it's relaxing and fun.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-