Always keep this in mind. You restore a really nice pump, you leave the guts inside. You sell it to someone, he puts it in his game room. Now for some unknown reason, the pulley on the pump turns just slightly, and out comes some of the worst smelling fuel you have ever, whatever. Unless you intend to empty the pump that you are leaving in the cabinet, don't put it inside the house or garage, the pump/meter contains some very old gas.
When you gut a pump, just take a wiff of the gas that comes out of it, this should be enough to verify why you are gutting the pump.
I once gutted 21 pumps in two days, I know what they smell like.
Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available