Aside from some of the things already mentioned, I see no provision for CARB HEAT in the forward baffles or left hand muffler!
The vertical baffling up front that directs airflow up and over the cylinders is missing. Engine cooling is compromised.
There is a firewall patch on the lower pilots side indicating possible previous damage and affecting firewall thickness. Similar reinforcement (thickness) should have been installed at the other 4 mountings (5 mount bolts on a '60) to assure proper engine mounting.
The pre '64 cowling isn't shock mounted, Bengie, but the tinnerman clipnuts driven between the skin and the underlying angle extrusion (likely because of stripped blindnuts) may compromise firewall sealing and introduce corrosion.
Where are the steering rod boots?
I believe the breather hose is SAE automotive hose (I could live with that, temporarily.)
What else have we missed?
