Service and Tune

Oil change (Castrol GTX 20W-50)
Oil filter change (Ryco R2124P)
Top-up auto trans
Top-up power steering
Check spark plugs
New points
Set ignition timing + idle mixture + idle speed
Bleed brakes

Last Oil + filter change = 56,936.8 "miles"
This Oil + filter change = 59,554.7 "miles"
Diff = 2,617.9 x 2.12 (conversion factor) = 5,550 km

Plugs were sooty, but noticed soot on the last half of the threads. Time for a bit of research...
How To Decode Spark Plug Part Numbers - NGK

Original Plugs: NGK BP5S
Plugs Dec 11: NGK B5ES

The original plugs have the the standard 9.5 mm (3/8") thread reach where the 2011 plugs have a 19 mm (3/4") reach.

The original plugs have a projected insulator design where the 2011 plugs don't.

From what I can gather, 1965 Chev small block heads require 0.375" reach (i.e. 3/8") = original plugs!

Thankfully I had soaked the originals in thinners after they were removed in 2011, so were pretty clean; after gapping to 0.035" they were once more put back into service.

The points were pretty badly pitted evenly across the contact faces. New points installed and the dwell set to bang-on 30 deg.

J