I am restoring a
1954/55 (Z-series) GMC 350 COE. It has a 270 engine and is a 3-window standard cab (a working class COE).
The original drive-train, brakes, and steering/suspension parts are now in good shape. All the sheet metal is ready to finish-coat paint.
Good luck with your restoration. Ask questions (Spanky is the COE expert).
And, you might want to consider joining the
oldGMCtrucks.com discussion board.
I'll be contacting you via Private Message to set up a phone-call.