Missing the PCV valve and hose connection to the base of the carb. You can get those at any parts store. That provides a metered amount of air at idle, so if that's missing or plugged, the mix will be off.
Yes there is a second spacer on non-a/c set ups. If someone doesn't have, you can buy a spacer from an industrial supply and cut to length.
Water pump. Yours has a pipe plug there.
Side marker light.
