Chris,
This week I purchased all brake cylinders for a 1955 GMC 350 COE from
Rock.auto.com. They are the best: their prices were 30%-50% less than NAPA (my FLAPS were no help). They sell Raybestos brake parts (drop-shipped from Raybestos) and the cost of shipping/handling for 6 wheel cylinders, three flexible brake lines, and a master cylinder was about $11.00.
They do not list old vehicles but they allow a search on a NAPA (and sometimes a GM) part number. I think the part numbers posted above are the same as the cylinders used on my COE. The Raybestos part numbers are given below.
Tim
Raybestos Part Numbers:
wc18196
wc18197
