rodfisher1,
What size 1955 New Design (Z-series, early 1955) truck do you have? I have a small collection of mid-50s GMC/Chevrolet Hydra-Matic manuals for GMC trucks (collected by Greg_H and me). I do not have any Hydra-Matic specialty-tools.
By the way, if you are interested, Hydra-Matic is the correct spelling (as you spelled it, but with a hyphen, not Hydro).
